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Classification 1

There are 50 questions. The pass mark is 90%. Best of Luck

1 / 50

1. Which of the following is a green filamentous algae

2 / 50

2. which of the following is not used for movement

3 / 50

3. The process where living organsims gradually change into a new form in response to change in the evironment is called

4 / 50

4. which of the following does not refer to the process by which content of the cytoplasm move from one organelle to the other

5 / 50

5. which of the following initiates the process of cell division in animals

6 / 50

6. What organism was being studied when penicillin antibiotic was discovered

7 / 50

7. Which of the following is not correct

8 / 50

8. Which of the followign is correct

9 / 50

9. which of the following is not correct about kingdom Plantae

10 / 50

10. Which of the following is not correct about a mucor

11 / 50

11. which of the following is not correc about plant and animals

12 / 50

12. Which of the following has no roots, stem or leaves

13 / 50

13. Which of the following is the most abundant plant

14 / 50

14. what organelle is used for storage of starch

15 / 50

15. What is excretion

16 / 50

16. The slimy covering of spirogyra is

17 / 50

17. which of the following is absent in plant cell

18 / 50

18. Which of the following is not a single celled organism

19 / 50

19. Which of the following responds to light stimulus

20 / 50

20. which of the following is the ability the following is the ability that allows living organisms to respond to internal stimulus

21 / 50

21. Which of the following definition is not correct

22 / 50

22. Which of the following is not a property of living organisms

23 / 50

23. which of the following is the process that releases chemical energy from food

24 / 50

24. Which of the following is not correct about the system of nameing lining organisms

25 / 50

25. Organisms that have 48 chromosomes are grouped together in family called

26 / 50

26. which of the following is the most abundant animal

27 / 50

27. Which of the following is not correct about photosynthesis

28 / 50

28. Which of the following is not a characteristic of mammals

29 / 50

29. which of the following is the link between living and non-living things

30 / 50

30. Which of the following is not correct about animals

31 / 50

31. Which of the following is not correct

32 / 50

32. Which of the following is not correct about the system of nameing lining organisms

33 / 50

33. which of the following exists at tissue level

34 / 50

34. Which of the following is usually absent in animal cell

35 / 50

35. When the food we eat becomes part of the body it is called

36 / 50

36. Each thread of a mucor is called

37 / 50

37. The process of classifying organisms into groups is called

38 / 50

38. What is nutrition

39 / 50

39. Mammals that lay eggs are called

40 / 50

40. which of the following is not a subgroup in the plant kingdom

41 / 50

41. Who discovered penicillin antibiotics

42 / 50

42. Which of the following is not correct about plants

43 / 50

43. which of the following is not correct about kingdom Plantae

44 / 50

44. The part of the mammalian brain that is more developed than other animal brain is the

45 / 50

45. The ability of organism to immediately change to the environment for survival is called

46 / 50

46. Which of the following is not used for classification of the types of plant

47 / 50

47. Which of the following is not a similarity between living and nonliving things

48 / 50

48. which process is involved in the building up of body materials

49 / 50

49. Which of the following helps transport of nutrients inside a cell or cytoplasm

50 / 50

50. Which of the following is not correct about bacteria

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Classification 2

There are 50 questions. The pass mark is 90%. Best of Luck

1 / 50

1. Organisms within which level can mate and procreate

2 / 50

2. which of the following is not a way of classifying crops according to their life cycle

3 / 50

3. Partially digested food ready to leave the stomach is referred to as:

4 / 50

4. which of the following is not correct about coelenterates

5 / 50

5. Which of the following is not correct about bacteria

6 / 50

6. Which of the following elements are necessary for the formation of chlorophyll in a plant?

7 / 50

7. which of the following is not an example of coelenterate

8 / 50

8. Which of the following is NOT true of Spirogyra?

9 / 50

9. Which of the following is not correct about a virus

10 / 50

10. Which of the following is NOT true of Mucor?

11 / 50

11. Which of the following is not a means of movement

12 / 50

12. In lower plants like mosses, the structure that performs the functions of roots in higher plants is called

13 / 50

13. What is the whiplike structure possessed by some motile bacteria

14 / 50

14. Green plants are important in the ecosystem because they are:

15 / 50

15. which of the following is not correct about coelenterates

16 / 50

16. which of the following is not correct about protists or protozoa

17 / 50

17. Which of the following moves with the aid of cilia

18 / 50

18. Which of the following is not in the kingdom monera

19 / 50

19. Which of the following is the correct representation of the five (5) Kingdoms into which plants and animals may be classified

20 / 50

20. A group of similar cells performing the same function is

21 / 50

21. kingdom is made of simple cell organisms with no definite or true nucleus

22 / 50

22. The movement of part of a plant in response to an external stimulus of no particular direction is

23 / 50

23. the sting cells of coelenterates is

24 / 50

24. which of the following is not a fungus

25 / 50

25. which of the following is not an algae

26 / 50

26. Bryophytes differ from flowering plants because they:

27 / 50

27. which of the following is not an algae

28 / 50

28. crops that complete their lifecycle in two years

29 / 50

29. Which of the following is not true about blue-Green Algae or cyanobacteria

30 / 50

30. In a community, bacteria and fungi are referred to as:

31 / 50

31. which of the following si not a shape of bacteria

32 / 50

32. What property possessed by organims protophyta phyllum of the kingdom protista makes them able to make their food

33 / 50

33. which of the following is not true about perennial crops

34 / 50

34. which of the following is not true about the method of classifying organisms

35 / 50

35. Which of the following is the appropriate hierarchy of living organisms

36 / 50

36. Which of these animals is radially symmetrical?

37 / 50

37. Which of the following is seed-bearing?

38 / 50

38. which of the following is not correct about biennial crops

39 / 50

39. which of the following is not a characteristics of thallophytes

40 / 50

40. In fish, the sense organs that detect movements in the water are located within the:

41 / 50

41. Viruses are regarded as non-living because they

42 / 50

42. which of the following is an example of perennial crop

43 / 50

43. Oxygen liberated during photosynthesis has been demonstrated to come from:

44 / 50

44. Euglena is considered an autotrophic organism because it

45 / 50

45. A food substance that produces red coloration with Sudan III contains

46 / 50

46. Which of the following organisms in the protista kingdom does not possess cilia or flagella

47 / 50

47. Which of the following is not correct about the standard naming system used by biologists to name organisms

48 / 50

48. What is the standard naming convention used by biologists to name organisms

49 / 50

49. Which of the following Kingdom is made up of single cell but with a definite nucleus and specialized structures called organelles

50 / 50

50. In Spirogyra, the pyrenoid

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Classification 3

There are 50 questions. The pass mark is 90%. Best of Luck

1 / 50

1. Which of the following phylum produces external hard shell body covering

2 / 50

2. Which of the following is not correct about the characteristics of the animal kingdom

3 / 50

3. Which of the following is not an example of a round worm (phylum Nematoda)

4 / 50

4. Which of the following has the largest number of body segments in the phylum Arthopoda

5 / 50

5. Which of the following is not a member of the coelenterate phylum

6 / 50

6. Which of the following phylum (division) may have vertebral columns

7 / 50

7. Which of the following is not correct about nematodes

8 / 50

8. Which of the following is not correct about sponges of the phylum porifera

9 / 50

9. Which of the following is not correct about hydra

10 / 50

10. Which of the following is not a property of the plant kingdom

11 / 50

11. Which of the following is not correct about the features of an insect

12 / 50

12. Which of the following is not a class under the phylum Chordata

13 / 50

13. Which of the following correctly arranges the order of increasing complexity in the animal kingdom

14 / 50

14. Which of the following is not correct about the classes under the phylum Arthropoda

15 / 50

15. Which of the following is not a class under Phylum arthropoda

16 / 50

16. Which of the following is not correct about sponges

17 / 50

17. Which of the following features allow a fish to regulate its density to be able to remain still at any depth underwater

18 / 50

18. Which of the following is not correct about the description of animal body

19 / 50

19. Which of the following helps the fish to detect changes in water pressure

20 / 50

20. Which of the following is not a function of the stem of a flowering plant

21 / 50

21. What properties present in plants makes them able to produce their own food in contrast to animals

22 / 50

22. Which of the following moves with the aid of cilia

23 / 50

23. Which of the following is not a class under Phylum arthropoda

24 / 50

24. Which of the following is not correct about the phyllum Thallophyta of the plant kingdom

25 / 50

25. Which of the following body feature allows organisms to grow bigger

26 / 50

26. Which of the following is not correct about sponges

27 / 50

27. Which of the following is not correct about hydra

28 / 50

28. Which of the following is not a member of the thallophyta (algae) phylum of the plant kingdom

29 / 50

29. Which of the following is not a feature of phylum Arthropoda

30 / 50

30. Which of the following is not feature of Phylum Mollusca

31 / 50

31. Which of the following is not a member of the phylum Mollusca

32 / 50

32. Which of the following is not a phyllum (division ) under the Kingdom Plantae

33 / 50

33. Which of the following is not correct about the phylum pteridophyte of the plant kingdom

34 / 50

34. Which of the following is not a characteristic of the spermatophyte phylum of the plant kingdom

35 / 50

35. Which of the following phylum in the animal kingdom have spiny skin

36 / 50

36. Which of the following is not part of the shoot system of a plant

37 / 50

37. Which of the following is not correct about hydra

38 / 50

38. Which of the following is not correct about hydra

39 / 50

39. Which of the following is the largest phylum in the animal kingdom

40 / 50

40. Which of the following is not correct about platyhelminthes phylum

41 / 50

41. Which of the following is not a feature of phylum Annelida

42 / 50

42. Which of the following is not correct about gymnosperms and angiosperms

43 / 50

43. Which of the following is not an example of phylum Annelida

44 / 50

44. Which of the following is the main photosynthesis organ of a flowering plant

45 / 50

45. Which of the following is not an example of nematode

46 / 50

46. Which of the following organism is useful in making wine, bread, and antibiotics

47 / 50

47. Which of the following is not a vegetative part of a flowering plant

48 / 50

48. How many kingdoms of living organisms are currently recognized by most biologists

49 / 50

49. Which of the following is not correct about the kingdom Fungi

50 / 50

50. Which of the phylum (division ) of the plant kingdom are known as vascular plants

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Nutrition

This is a written test , fill in the blank space type. Insert ONE WORD OR ONE TERM ONLY  in each of the spaces provided. The pass mark is 90%. Best of Luck

1 / 3

1. nut1-In biology,  refers to the process by which living organisms obtain and utilize the substances in the environment for metabolism and maintenance of  life

2 / 3

2. nut4-Organisms (like plants) synthesize their own food using inorganic substances and energy from sunlight in a process called or in a chemical reactions  called

3 / 3

3. nut2-The two main types of feeding in living organisms is – nutrition and – – Nutrition

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Nutrition 2

This is fill in the blank test.  Supply only ONE WORD or ONE TERM in each of the blank spaces .  The pass mark is 90%. Best of Luck

1 / 2

1. nut3-Organism that consume plants are called – . Organisms that consume other animals are called- and Organisms that consume plant and animals are called

2 / 2

2. nut6-The four main process that occur during nutrition are :  , ,  , and 

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Nutrition 3

This is fill in the blank test.  Supply only ONE WORD or ONE TERM in each of the blank spaces .  The pass mark is 90%. Best of Luck

1 / 2

1. nut5- Nutrition or utilization of food is important for several vital processes in the body of the living organism. List any 5 of the vital processes that nutrition is important for:           .  Use only one word or one term for each of the process

2 / 2

2. nut7- List 4 types of nutrition in which organism ingest organic material and do not manufacture their own food:

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Created by Agodirin

Nutrition 4

This is fill in the blank test.  Supply only ONE WORD or ONE TERM in each of the blank spaces .  The pass mark is 90%. Best of Luck

1 / 1

1. nut8-Please enter one word for in each of the blank spaces to describe the process of photo synthesis:  In the of leaves, absorbs sunlight. This energy is used to split molecules into and . The is released into the air, while the ions and electrons are used in the light-dependent reactions to produce and NADPH. These energy-rich molecules then power the cycle or reaction, where carbon dioxide is fixed and combined with hydrogen to produce glucose (sugar)

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Nutrition 5

This is fill in the blank test.  Supply only ONE WORD or ONE TERM in each of the blank spaces .  The pass mark is 90%. Best of Luck

1 / 1

1. nut9-Insert one word to complete each of the steps in during the process of photosynthesis

In the   reaction

In the of  leaves

Energizing of – by sunlight

causes of water leading to

Formation of oxygen and hydrogen

In the   reaction reduction of carbon dioxide occurs leading to the formation of sugar

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Created by Agodirin

Nutrition 6

This is fill in the blank test.  Supply only ONE WORD or ONE TERM in each of the blank spaces .  The pass mark is 90%. Best of Luck

1 / 1

1. nut10- The type of nutrition in which organism feed on dead and decay organic material is called nutrition and the organisms are called .  The type of nutrition in which one organism depends on  another for feeding in which one benefits and the other is harmed is called nutrition .  The organism that is harmed is the and the organism that benefits is the

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10
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Digestive Tract of Human

Picture test

1 / 1

1. nut-picture- 1  Fill in the blank spaces:

What is A . What is B .

What is C . What is D .

The structure  E is  -bladder.

What is F .

The structure G is   duct.

what is H .

What is M .

What is K

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5
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Created by Agodirin

Digestive Tract of Earthworm

1 / 1

1. nut-picture-2: Fill in the blank spaces

What is A 

What is B

What is C .

What is D

What is E

What is F

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Digestive Tract of Cockroach

1 / 1

1. Nut-picture-3

The structure labeled is A  gland

What is B

What is C

What is D

The structure labelled  E is mesenteric

What is F

The structure labeled G is tubules

What is H

What is I

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3
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Biology: Digestive Tract of Bird

1 / 1

1. Nut-picture 4  Digestive Tract of Bird

What is A

What is B

What is C

The structure labelled D  is  duct

What is E

The structure labelled F is duct

The structure labelled G is bladder

What is H 

The structure labelled  I is small

What is J

What is K

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Biology:Transportation

1 / 50

1. transport22_The threadlike structure that forms the mesh work during blood clotting is

2 / 50

2. transport23_The inability of blood to clot easily in some human is called

3 / 50

3. transport41_which of the following is not correct about guttation

4 / 50

4. transport32_Which of the following is not related transportation of nutrients in unicellular organism

5 / 50

5. transport35_which of the following is responsible for downward transportation of nutrients in plants

6 / 50

6. transport13_the fluid portion of blood is called

7 / 50

7. transport9_Which of the followin g uses cell sap and latex as means of transporation of nutrients and wastes

8 / 50

8. transport12_what are the two components of blood in humans

9 / 50

9. transport39_The instrument used to measure transpiration from plant surface is

10 / 50

10. transport14_which of the following is not found in blood

11 / 50

11. transport27_the beating of the heart is timed by the

12 / 50

12. transport25_contraction of the heart to pump blood to other parts of the body is called

13 / 50

13. transport24_The heart is located in the

14 / 50

14. transport3_which of the following is not a medium for transportation of nutrients in living orgaisms

15 / 50

15. transport16_the component of red cells that transports oxygen is

16 / 50

16. transport34_Which of the following is responsible for upward transportation of nutrients in plants

17 / 50

17. transport40_Which of the following does not affect the rate of transpiration in plants

18 / 50

18. transport38_The greatest loss of water from the surface of leaves or plant shoot occurs through the

19 / 50

19. transport48_In the closed circulation found in vertebrates the point whe re exchange of nutrients and waste occurs between the cells and the circulatory system is the

20 / 50

20. transport44_what are the two types of circulatory system present in living organisms

21 / 50

21. transport26_relaxation of the heart muscle to allow refilling before pumping the blood out is called

22 / 50

22. transport28_the vessels that carry blood away from the heart are called

23 / 50

23. transport47_The structure of closed circulatory system is from the heart and back to the heart is

24 / 50

24. transport29_the vessels that carry blood to the heart are called

25 / 50

25. transport11_which of the following is responsible for pumping the blood in human

26 / 50

26. transport4_the mode of excretion in unicellular organism is

27 / 50

27. transport10_Which of the following is not a part of the transportation system in human

28 / 50

28. transport33_the nutrient and hormone conducting structure in plant is

29 / 50

29. transport42_Which of the following is not translocated in plant

30 / 50

30. transport46_Which of the following does not have open circulation

31 / 50

31. transport17_which of the following are functions of the red blood cell

32 / 50

32. transport1_Which of the following is not a function of the transportation system

33 / 50

33. transport37_loss of water vapour from the surface of the shoot system of plant is

34 / 50

34. transport19_Which of the following is not involved in the prevention of blood loss (formation of clots)

35 / 50

35. transport18_which of the following is not a function of white blood cells

36 / 50

36. transport36_During the upward transportation of fluid in the plant. The force responsible for pushing xylem sap or fluid upwards along the shoot system is

37 / 50

37. transport7_Which of the following use blood as means of transportation of nutrients and wastes

38 / 50

38. transport31_which of the following carries deoxygenated blood

39 / 50

39. transport45_The structures in blood vessels that allow blood to flow in one direction only are

40 / 50

40. transport43_in open circulation the heart pumps blood inot a blood vessel which branches to terminate in spaces called

41 / 50

41. transport30_which of the following carreis oxygenated blood

42 / 50

42. transport8_Which of the following use blood as means of transportation of nutrients and wastes

43 / 50

43. transport49_What are the two types of closed circulatory systems found in vertebrates

44 / 50

44. transport50_The part of the heart that receives the blood returning from the vein is

45 / 50

45. transport6_which of the following is means of transportation of nutrients and wastes in unicellular organisms

46 / 50

46. transport21_the process of engulfing and digesting bacteria by white cell is called

47 / 50

47. transport2_which of the following is not a medium for transportation of nutrients in living organisms

48 / 50

48. transport15_which of the following is not a function of plasma

49 / 50

49. transport20_Which of the following is not formed in the bone marrow

50 / 50

50. transport5_the mode of nutrition in unicellular organisms is

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Biology: Transportation 2

1 / 50

1. transport85_Which of the following is not correct

2 / 50

2. transport93_Which of the following is a function of the xylem in plants?

3 / 50

3. transport88_the two main vascular tissue in plants is

4 / 50

4. transport78_the vein and artery supplying the heart muscles are

5 / 50

5. transport87_the process of transportation of nutrients in simple nonvascular plants is

6 / 50

6. transport79_the vein and artery supplying blood to the lungs are

7 / 50

7. transport52_in mammals the blood that passes from the heart to the other parts of the body and back to the heart is

8 / 50

8. transport65_Which of the following is not a function of the blood

9 / 50

9. transport68_The primary structure responsible for pumping blood for circulation through the mammalian circulatory systems is the?

10 / 50

10. transport96_Which of the following is a characteristic of arteries?

11 / 50

11. transport74_The correct pathway for blood flow from the heart to the tissues of mammals is?

12 / 50

12. transport95_The main function of the phloem in plants is to:

13 / 50

13. transport64_which of the following is not function of the blood

14 / 50

14. transport84_which of the following is not correct about the heart beat

15 / 50

15. transport100_In plants, the process by which water is lost through the stomata is called:

16 / 50

16. transport53_oxygenated blood flows through what part of the heart in mammals

17 / 50

17. transport76_when at rest the adult heart pumps at howmany beats per minute

18 / 50

18. transport75_Which of the following is not correct about the human heart

19 / 50

19. transport67_which of the following produces antibodies

20 / 50

20. transport62_how is carbondioxide excreted from human body

21 / 50

21. transport77_During exercise the heart beats

22 / 50

22. transport81_the valve betwee the right auricle and right ventricle is called the

23 / 50

23. transport86_the process of transportation in algae is

24 / 50

24. transport73_Lack of nucleus is a feature in?

25 / 50

25. transport69_Circulation of blood to all parts of the body except the lungs is through?

26 / 50

26. transport59_Which of the following blood cells has the longest life span

27 / 50

27. transport55_which of the following is not part of plasma

28 / 50

28. transport90_the phloem is made of of companion cells and

29 / 50

29. transport70_The blood component that has the greatest affinity for oxygen is the?

30 / 50

30. transport60_which of the following blood cells has the shortest lifespan

31 / 50

31. transport92_The absorbtion of minerals in the root hair of plant is by

32 / 50

32. transport80_the veins that carry blood to the heart are called

33 / 50

33. transport54_deoxygenated blood flow through what part fo the heart in mammals

34 / 50

34. transport72_Blood circulation in a mammal is said to be double because? 

35 / 50

35. transport57_Which of the following is not a blood cell

36 / 50

36. transport97_Which of the following is NOT a function of the blood?

37 / 50

37. transport83_which of the followng is not true about the blood flow in the heart

38 / 50

38. transport58_which of the following is not a type of white blood cell

39 / 50

39. transport63_in what form is waste product of protein excreted from the body

40 / 50

40. transport61_how is carbondioxide excreted from human body

41 / 50

41. transport99_The main function of the lymphatic system in mammals is to:

42 / 50

42. transport89_the xylem is made up of long spindle shaped cells called

43 / 50

43. transport56_which of the following is not part of plasma

44 / 50

44. transport91_Which of the following is not correct about the absorbtion of water from the root of plants

45 / 50

45. transport66_When a blood vessel is broken or cut, which of the following helps to prevent excessive blood loss

46 / 50

46. transport94_In mammals, the pulmonary artery carries:

47 / 50

47. transport71_The blood vessel which carries blood from the alimentary canal to the liver is the?

48 / 50

48. transport82_the valve betwee the left auricle and left ventricle is called the

49 / 50

49. transport51_in mammals the blood that passes from the heart to the lungs and back to the heart is

50 / 50

50. transport98_Which of the following is a component of the vascular bundle in plants?

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Biology: Sense Organs

1 / 50

1. sense43_the function of the tiny bones in ear is to

2 / 50

2. sense11_The receptors in the eyes that perceive vision are

3 / 50

3. sense50_the nerve that is involved with hearing

4 / 50

4. sense6_Which of the following receptors in the skin perceives pain

5 / 50

5. sense34_which of the following animal have round pupils

6 / 50

6. sense23_the eye is made up of three layers. Which of the following is not one of them

7 / 50

7. sense10_The temperature receptors on the skin are

8 / 50

8. sense12_the two types of photo receptors for vision in the eyes are

9 / 50

9. sense16_Which of the following is not a protection for the eye

10 / 50

10. sense37_which of the following is not correct

11 / 50

11. sense44_which of the following is the eardrum

12 / 50

12. sense32_which of the following is not correct about the blind spot in the eye

13 / 50

13. sense5_which of the following receptors is absent in the skin

14 / 50

14. sense19_which of the following does not prevent or removes dust from the eye

15 / 50

15. sense4_Which sense organs helps to detect warm or hot object

16 / 50

16. sense17_Which of the following is not a protection for the eye

17 / 50

17. sense28_the part of the eye that regulates the amount of light entering the eye is the

18 / 50

18. sense15_Which of the following is not a protection for the eye

19 / 50

19. sense47_which of the following structure in the ear is not involved with hearing

20 / 50

20. sense20_which of the following produces tears

21 / 50

21. sense46_which of he following amplify the sound fibrations that enter the ear

22 / 50

22. sense35_which of the following animal have round pupils

23 / 50

23. sense21_which of the following removes bacteria from the eyes

24 / 50

24. sense40_the part of the ear from outside in is

25 / 50

25. sense3_which of the following sense organs is for balance and joint position sense in humans

26 / 50

26. sense14_The receptors that help us to see at night and in the dark are

27 / 50

27. sense1_Which of the following is not a sense organ

28 / 50

28. sense26_The structure of the eye that directs light to the retina is the

29 / 50

29. sense25_which of the following is the fluid in the posterior chamber of the eye

30 / 50

30. sense49_the nerve that is involved with vision

31 / 50

31. sense45_which of the following structure in the ear is responsible for maintaining balance and body posture

32 / 50

32. sense13_When we look at the environment the receptor that help us to differentiate colors are

33 / 50

33. sense27_the light senstive part of the eye is the

34 / 50

34. sense7_which of the folowing receptors senses joint position

35 / 50

35. sense24_which of the following is the fluid in the anterior chamber of the eye

36 / 50

36. sense29_the part of the eye that carries light information from the eye to the brain

37 / 50

37. sense22_the eye has 6 muscles, which of the following are not part of the muscles

38 / 50

38. sense39_all the following are parts of the ear except

39 / 50

39. sense2_how many sense organs do human have

40 / 50

40. sense41_the three bones of the middle hear help to amplify sound waves which comes from the eardrum, which of the following is not one of the three bones of the middle ear

41 / 50

41. sense30_the structure that regulates the diameter of the pupil to allow more or less light to pass through the pupil is

42 / 50

42. sense18_Which of the following protects the eye from the shock of shaking or movement

43 / 50

43. sense48_which of the following converts sound waves entering the ear into electrical waves for transmission to the brain

44 / 50

44. sense36_which of the following animal have slit pupils

45 / 50

45. sense42_the outer ear is separated from the middle ear by the

46 / 50

46. sense31_Which of the following is not correct

47 / 50

47. sense9_The sense receptor used by blind people for reading on a braille is

48 / 50

48. sense38_the ear has how many parts

49 / 50

49. sense33_which of the following is not correct

50 / 50

50. sense8_which of the following receptors detects pressure or touch

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Biology: Sense Organs Vol 2

1 / 50

1. sense85_which of the following is the correct order in the mechanism of vision

2 / 50

2. sense76_which of the following is not correct about presbyopia

3 / 50

3. sense57_The ability of the human eyes to focus far and near object is

4 / 50

4. sense83_which of the following is not involved in maintaining balance and posture

5 / 50

5. sense75_when a kind of cone receptor is absent in the eye the person has

6 / 50

6. sense99_Persons that lack the ability to tell the taste of substances are

7 / 50

7. sense86_which of the following is not correct about the mechanism of vision

8 / 50

8. sense78_which of the following is not correct about color blindness

9 / 50

9. sense93_A person who cannot detect a particular smell or scent is

10 / 50

10. sense67_cataract of the eye affects which structure in the eye

11 / 50

11. sense54_the part of the tongue that tastes salt is

12 / 50

12. sense55_the part of the tongue that tastes sour is

13 / 50

13. sense90_which of the following is damaged by very loud noise or sound leading to deafness

14 / 50

14. sense88_which of he following is the correct order of the mechanism of hearing

15 / 50

15. sense66_which of the following happens when there is dim light in the environment

16 / 50

16. sense52_the part of the tongue that tastes sweetness is

17 / 50

17. sense91_which of the following is not a cause of deafness

18 / 50

18. sense64_in what situation will an object be visible to the eyes

19 / 50

19. sense84_which of the following is required for night vision

20 / 50

20. sense82_which of the following is not involved in bending of the eye towards the retina

21 / 50

21. sense87_which of the following animals does not have eyes that shine at night

22 / 50

22. sense65_which of the following happens when there is too much light in the environment

23 / 50

23. sense89_which of the following is not involved in maintaining balance and posture

24 / 50

24. sense77_Which of the following occurs when the curvature of the lens of the eye becomes uneven

25 / 50

25. sense71_which of the following refers to opacity of the lens

26 / 50

26. sense58_which of the following is not involved in vision

27 / 50

27. sense51_the nerve that is involved with smell

28 / 50

28. sense95_which of the following have good sense of smell

29 / 50

29. sense73_which of the following is a disease where the accomodation of the lens of the eye is impaired

30 / 50

30. sense81_the organism that causes river blindness is

31 / 50

31. sense70_which of the following refers to long sightedness

32 / 50

32. sense63_which of the following is correct about what happens in the eye when the eye is focusing on a far or distant object

33 / 50

33. sense74_which of the following conditions requires bifocal lens

34 / 50

34. sense92_which of the following is not good advice for the ears

35 / 50

35. sense72_which of the following is not correct about long sightedness

36 / 50

36. sense94_the part of the brain responsible for perception of smell is

37 / 50

37. sense100_A substance used to test for genetic inheritance of inability to taste is

38 / 50

38. sense80_which of the following is not good advice for the eyes

39 / 50

39. sense60_the structure in the eye that holds the lens in place is the

40 / 50

40. sense97_which of the following does not have a specific taste bud for perception in the tongue

41 / 50

41. sense96_the correct order in the mechanism of perceiving smell

42 / 50

42. sense98_the correct order in the mechanism of perceiving taste

43 / 50

43. sense69_which of the following refers to short-sightedness

44 / 50

44. sense62_which of the following is correct about what happens in the eye when the eye is focusing on a near object

45 / 50

45. sense53_the part of the tongue that tastes bitterness is

46 / 50

46. sense61_which of the following focuses light to the retina of the eye

47 / 50

47. sense68_which of the following is not correct about short sightedness

48 / 50

48. sense56_What is the correct sequence for the perception of smell in mammals?

49 / 50

49. sense79_which of the following is not good advice for the eyes

50 / 50

50. sense59_the structure in the eye that changes the focus of the lens to see both far and near objects is the

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Respiration 1

1 / 50

1. resp37_Internal respiration is the respiration inside the cell where food is converted to chemical energy. Which of the following is not correct about the process

2 / 50

2. resp19_which of the following is used for gaseous exchange in fish

3 / 50

3. resp22_which of the following use external gills for respiration

4 / 50

4. resp44_During experiment to demonstrate respiration in small potted plant, the air coming from the plant jar turned caustic soda(lime water) milky. This suggests that the potted plant

5 / 50

5. resp43_in simple acquatic plant like spirogyra, the air dissolved in water gets into the cells by

6 / 50

6. resp42_Following vigorous exercise with development of oxygen dept, which of the following accumulates in the muscle causing muscle cramps

7 / 50

7. resp41_During an experiment to demonstrate espiration in rat, when the air from the jar containing the rat turns lime water milky, this shows that the rat has expired

8 / 50

8. resp34_which of the following is not involved in respiraiton in man

9 / 50

9. resp16_which of the following are means of gaseous exchange by plants

10 / 50

10. resp26_During vigorous exercise or workout, the oxygen needed to remove excess build up of lactic acid in muscle is

11 / 50

11. resp7_the part of the lung where oxygen is exchanged for carbondioxide is

12 / 50

12. resp12_which of the following expires carbondioxide and takes in oxygen through the skin

13 / 50

13. resp30_which of the following prevent food from entering the airway in mammals

14 / 50

14. resp36_which of the following correctly describes the mechanism of exhalation (expiration ) in man

15 / 50

15. resp20_in fish, oxygenated water is drawn in through the

16 / 50

16. resp13_which of the following does not undergo respiration by diffusion of gases through the skin (cutaneous respiration)

17 / 50

17. resp14_which of the following is not a means of gaseous exchange by terrestrial animals

18 / 50

18. resp32_which of the followin gis the voice box

19 / 50

19. resp31_which of the following correctly describes the respiratory tract in mammals

20 / 50

20. resp8_what is the pathway of intake of oxygen from the atmosphere to the body cells

21 / 50

21. resp6_the organ of the body where atmospheric oxygen is taken in and carbondioxide is expelled is

22 / 50

22. resp49_What is respiratory quotient during respiration

23 / 50

23. resp1_The chemical energy that is released following oxidation of food is

24 / 50

24. resp15_which of the following is a means of gaseous exchange by animals living in dry habitat

25 / 50

25. resp2_The process of oxidation of food in the mitochondrium of cell to release energy is

26 / 50

26. resp28_which of the following is not correct about comparison of cellular respiration

27 / 50

27. resp25_which of the followiing is the respiratory surface in man

28 / 50

28. resp4_Which of the following is a waste produce of respiration in animals

29 / 50

29. resp23_The tracheal system is used for respiration in

30 / 50

30. resp47_which of the following is not correct about inspired and expired air

31 / 50

31. resp40_During aerobic respiration, which of the following correctly represents the overall process of chemical respiration to produce energy from food(glucose)

32 / 50

32. resp24_which of the following is not part of the tracheal system for respiration

33 / 50

33. resp39_which of the following is not correct about the process of chemical respiration where food is converted to chemical energy

34 / 50

34. resp9_the process of exchange of gases (respiration) in amoeba is

35 / 50

35. resp29_which of the following is not part of the respiratory tractin mammals

36 / 50

36. resp50_Which of the following is not a byproduct of internal respiration

37 / 50

37. resp48_which of the following is not correct about the concentration of air

38 / 50

38. resp35_which of the following correctly describes the mechanism of inhalation (inspiration ) in man

39 / 50

39. resp38_which of the following is not correct about the breathing mechanism in mammals

40 / 50

40. resp3_Aerobic respiration is the oxidation of food in the presence of oxygen. Which of the following are the products

41 / 50

41. resp11_which of the following undergoes direct external respiration by diffusion of carbondioxide and oxygen through the membrane into the organism without posessing a respiratory system

42 / 50

42. resp5_n the cells, the process by which carbon dioxide is exchanged for oxygen during respiration is by

43 / 50

43. resp33_the respiratory surface called air sac in mammals is the

44 / 50

44. resp46_which of the following is not present in expired air

45 / 50

45. resp18_which of the following is a means of gaseous exchange in amoeba

46 / 50

46. resp45_Which of the following is not present in inspired air

47 / 50

47. resp10_which of the following has a respiratory system

48 / 50

48. resp17_which of the following undergoes respiration through the skin and mouth

49 / 50

49. resp21_in fish carbondioxide diffuse out of the body through the

50 / 50

50. resp27_which of the following is not correct about cellular respiration

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Genetics 1

Welcome to Genetics and Variation Quiz . The pass mark for this quiz is 90%. Best of Luck!

1 / 50

1. The genes an individual inherits from their parent is called

2 / 50

2. The light skin in an albino is an example of

3 / 50

3. A flower is red and has genotype Rr. The flower is

4 / 50

4. The two strands that form the chromosome are called

5 / 50

5. Which of the following is not correct

6 / 50

6. A scientist identified that the color of a plants in his garde are green with gene G or yellow with gene y. He randomly selected a plant from is garden and found that the color was yellow. Which of the following is not correct

7 / 50

7. A scientist cross red colored plant with gene(Rb) with another Red colored plant with gene (Rb). If R stands for red color and b for blue color plant. Which of the following is not correct

8 / 50

8. which of the following is not determined by DNA

9 / 50

9. Which of the following is not present in RNA

10 / 50

10. A cross where only one characteristic is considered is refered to as

11 / 50

11. which of the following is not correct

12 / 50

12. A trait that is expressed in the presence of another character that is suppressed is called

13 / 50

13. The haploid number of chromosomes is

14 / 50

14. The component of structure which directly determines inheritance is

15 / 50

15. The physical manifestation of the genetic inheritance is called

16 / 50

16. Which of the following is correct about of offspring genotype in a cross between TT and tt

17 / 50

17. R stands for Round leave and r for wrinkled leaves . If RR parent cross Rr parent. What will be the shape of the leaves of the offsprings

18 / 50

18. Which of the following RNAs is not used by DNA to perform its function

19 / 50

19. which of the following is not correct

20 / 50

20. After sexual reproduction off-springs are similar to parents in some traits due to

21 / 50

21. The organisms that were used in genetic experiment by Gregor Mendel were

22 / 50

22. The Australian monk that is credited for being the father of the modern knowledge of genetics is

23 / 50

23. The individual inherits one gene from the mother and another from the father. If the gene from the mother does not manifest due to the presence of the gene from the father. The gene from the mother is said to be

24 / 50

24. Which of the following is not correct

25 / 50

25. During an experiment, the scientist crossed pure breed tall plants with genotype TT with pure breed short plant with genotype tt. All the first generation offsprings were tall plants. Which of the following is not correct

26 / 50

26. which of the following characteristics is not influenced by genetic inheritance

27 / 50

27. Which of the following is correct about the mendelian law of segregation

28 / 50

28. When genetically dissimilar parents meet to produce an off-spring, the off-spring is called a

29 / 50

29. Which of the following is responsible for the color of skin in human beings

30 / 50

30. The elements within the chromosomes that determine the physical, mental and physiologic characteristics of an individual are called

31 / 50

31. A pair of contrasting gene occupying same locus on a chromosome are called

32 / 50

32. A scientist found that the genotype of a tall plant was TT, and another tall plant was Tt. Which of the following is not correct

33 / 50

33. The type of division in which n number of chromosomes is formed in the daugther cells is called

34 / 50

34. The way and manner by which traits are transferred from parent to child is called

35 / 50

35. A Red flower has genotype RR , which of the following is correct

36 / 50

36. Which of the following is not a binding between purine base and pyrimidine base in DNA helix

37 / 50

37. Which of the following is responsible for color of skin in Albinos

38 / 50

38. Which of the following is not present in DNA chain

39 / 50

39. After the male sex cell(the sperm) unites with the female sex cell (the ovum) the following is formed

40 / 50

40. The chemical particle that carries the genetic code for each individual is called

41 / 50

41. During which stage of cell division do the pair of contrasting genes or alleles separate into different gametes

42 / 50

42. The basic chemical unit of DNA(Deoxy-riboNucleic Acid) is

43 / 50

43. Which of the following terminologies refers to the word Off-spring

44 / 50

44. Which of the following is not a type of RNA

45 / 50

45. which of the following will be the ratio of the phenotype of the offsprings when Rr cross Rr

46 / 50

46. Which of the following is correct

47 / 50

47. A flower is white color and has genotype ww, So the flower is said to be

48 / 50

48. the diploid number of chromosomes is

49 / 50

49. R stands for Round leaves and r for wrinkled leaves. If parent with Rr cross parent with Rr , which of the following will occur in the off-spring leaves

50 / 50

50. Which of the following component of the cell is involved in hereditary

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Genetics & Variation 2

There are 50 multiple choice questions in this MCQ. The pass mark is 90%. Best of Luck

1 / 50

1. The sex-linked defect in which very slight cuts produce severe bleeding is known as:

2 / 50

2. People with sickle-cell anaemia have haemoglobin:

3 / 50

3. A yellow maize is planted, and all the fruits obtained have yellow seeds. When they are cross-bred, yellow seeds and white seeds are obtained in a ratio of 3:1. The yellow seed is said to be:

4 / 50

4. The hereditary material of the cell is:

5 / 50

5. A mammal with red fur and long ears was crossed with another having white fur and short ears. If the offspring had red fur and short ears, then

6 / 50

6. if a DNA stran has base sequence AGT, the complementary strand must be

7 / 50

7. The DNA molecule is a chain of repeating

8 / 50

8. A dog lost its tail in an accident, if it crosses another dog with normal tail, how many of the puppies will be born without tail

9 / 50

9. The biological factor that is unique to all individual is

10 / 50

10. If a plant, homozygous for round and yellow (RR;YY), is crossed with a wrinkled green type (rr;yy), all of the resulting seeds will be

11 / 50

11. A feature associated with Y chromosome in humans

12 / 50

12. The basic point of impact which leads to mutation is

13 / 50

13. Both recessive and dominant characters are found on

14 / 50

14. If a DNA strand has base sequence ACT, the complementary stand must be

15 / 50

15. Which of the following is monohybrid cross

16 / 50

16. The inheritable characters that are determined by a gene located on the X- chromosome is

17 / 50

17. If a woman’s genotype is Tt Qq Rr, what would be the gene content of her eggs?

18 / 50

18. The character producing factors in living organisms are

19 / 50

19. Which of the following will result from a cross between Yy and Yy

20 / 50

20. Which of the following is correct about a recessive allele

21 / 50

21. A cross where only one characteristic is considered is refered to as

22 / 50

22. A man who has the trait for color blindness marries a normal woman. What percentage of their children would be sufferers, carriers, and normal respectively?

23 / 50

23. A man who is heterozygous for hemophillia marries a woman who is double recessive, what percentage of their children will have hemophilia

24 / 50

24. A man with blood group A is married to a woman with blood group A. Which of the following group combinations is possible if the family has three children?

25 / 50

25. If R and r denote the genes for a character, the offspring of the cross between RR and Rr are:

26 / 50

26. The number of chromosomes in each somatic cell is

27 / 50

27. Sex-linked traits are located on

28 / 50

28. If XN is the dominant allele for color blindness and Xn is the recessive allele. A boy with chromome YXn will be

29 / 50

29. In the gene locus for eye colour in humans, the allele for brown eyes is dominant over the allele for blue eyes. If a homozygous brown-eyed girl has a brother with blue eyes, what are the likely phenotypes of their parents’ eye colour?

30 / 50

30. In a mendelian cross of red and white plant, the exhibition of incomplete dorminance in the off-spring will give

31 / 50

31. Which of the following is sex linked

32 / 50

32. When two parents are carriers of albinism gene, how many of their off-springs will be albinos

33 / 50

33. The ratio of carriers to sicklers in the F1 generation derived from a parental cross of two carriers of the hemoglobin S gene is:

34 / 50

34. A tall plant crossed with a dwarf plant produces offspring of which half are tall and half are dwarf. What are the genotypes of the parents?

35 / 50

35. Which of the following is true of the children of a hemophilic man who marries a woman that is not hemophilic and does not carry the trait?

36 / 50

36. Which of the following is a discontinuous variation

37 / 50

37. Aman with a normal haemoglobin (AA) marries a woman who has sickle-cell haemoglobin (SS).They have a child who has sickle-cell trait. Which of the following genotypes could be associated with the child’s haemoglobin ?

38 / 50

38. The F1 of a cross between a tall and a dwarf plant was tall. The F1 was advanced to F2. How many of 120 F2 plants will be dwarf?

39 / 50

39. A gene which expresses itself only in the homozygous condition is

40 / 50

40. If a dark-skinned woman (Bb) marries an albino man (bb) and they have four children, how many of the children will be dark-skinned?

41 / 50

41. An accurate identification of an offender(for example a rapist) can be carried out by

42 / 50

42. The probability of being a boy or girl depends on the

43 / 50

43. Women do not suffer color bilindness because

44 / 50

44. A man who is a carrier of hemophilia trait marries a woman who is homozygous recessive, what percentage of their children will have hemophilia

45 / 50

45. Which of the following is not correct about albinism

46 / 50

46. A colorblind man marrier a carrier woman, what percentage of their children will be colorblind

47 / 50

47. The correct ordering of the hereditary material based on size is

48 / 50

48. The first four children of a couple were girls, the probability of the 5th being a girl is

49 / 50

49. A man an his wife are heterozygous for sickle cell trait, the percentage of their children that will be carriers or sicklers will be

50 / 50

50. If the Allelel for baldness is Bb, a female carrier will have what chromosome

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Genetics & Variation 3

There are 50 questions in this Quiz. The pass mark is 90%. Best of Luck!

1 / 50

1. Which of the following is correct about a recessive allele

2 / 50

2. Which of the following is not correct about albinism

3 / 50

3. When two parents are carriers of albinism gene, how many of their off-springs will be albinos

4 / 50

4. To reduce sickle cell disease and trait in a population which of the following is correct

5 / 50

5. Which of the following is the genotype of blood group O

6 / 50

6. A man with blood group AB marries a woman with blood group O, how many of their children will be blood group O

7 / 50

7. People without antigen on their blood cells have blood group

8 / 50

8. Which of the following is sex linked

9 / 50

9. During fertilization if the ovum receives Y chromosome from the sperm , which of the following will occur

10 / 50

10. Which of the following is correct about a recessive allele

11 / 50

11. Which antigen is present on the cell of person with blood group A

12 / 50

12. Which of the following is inherited as a recessive trait

13 / 50

13. Mating of individuals of same species but different genetic characteristics is

14 / 50

14. A type of genetic inheritance where a trait is controlled by two or more genes, each contributing to the overall phenotype

15 / 50

15. A man has blood group A which of the following is correct

16 / 50

16. Which of the following is not inherited in a recessive trait

17 / 50

17. Which of the following is a recessive gene trait

18 / 50

18. To avoid sickle cell off-springs which of the following is correct

19 / 50

19. Which of the following kind of breeding leads to stronger offsprings than the parents

20 / 50

20. Which of the following blood groups is a universal donor

21 / 50

21. Which of the following is not correct about a woman of blood group O and husband of blood group AB

22 / 50

22. During cell division, the process that leads to variation between individuals is

23 / 50

23. Which of the following is correct about blood group O

24 / 50

24. which of the following is not a type of polygenic inheritance

25 / 50

25. A dog lost its tail in an accident, if it crosses another dog with normal tail, how many of the puppies will be born without tail

26 / 50

26. When incorrect blood transfusion or blood transfusion mismatche occurs. Which of the following will happen

27 / 50

27. Which of the following is not a genetically determined factor that can be used to differentiate individuals

28 / 50

28. Which of the following is the genotype of blood group AB

29 / 50

29. A man who is a carrier of hemophilia trait marries a woman who is homozygous recessive, what percentage of their children will have hemophilia

30 / 50

30. When two parents are carriers of albinism gene, how many of their off-springs will be albinos

31 / 50

31. Which of the following trait is not inherited in a recessive trait

32 / 50

32. Which of the following is not a type of blood group

33 / 50

33. Which of the following is not a genetically determined factor that can be used to differentiate individuals

34 / 50

34. the crossign of two completely unrelated strains of organism is

35 / 50

35. which of the following is not correct about a dominant allele

36 / 50

36. Which of the following is not correct

37 / 50

37. A situation where cross between unrelated strains leads to stronger off-spring is called

38 / 50

38. Which of the following blood groups is a universal recipient

39 / 50

39. Which of the following is the genotype of blood group A

40 / 50

40. Which of the following is a disadvantage of inbreeding in humans

41 / 50

41. An example of trait controlled by more than one gene or multiple allele is

42 / 50

42. During fertilization if the ovum receives X chromosome from the sperm, which of the following will occur

43 / 50

43. Mating between closely related organisms such as father and daughter is called

44 / 50

44. When there is incorrect blood transfusion, which of the following occurs

45 / 50

45. which of the following is correct about blood group O

46 / 50

46. When more than one pair of allele control for same trait it is referred to as

47 / 50

47. A man who is heterozygous for hemophillia marries a woman who is double recessive, what percentage of their children will have hemophilia

48 / 50

48. An accurate identification of an offender(for example a rapist) can be carried out by

49 / 50

49. Which of the following will result from a cross between Yy and Yy

50 / 50

50. The differences between individuals is called

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Biology: Excretion

1 / 50

1. excretion28_Which of the following is breathing pores present at the bark of woody trees

2 / 50

2. excretion8_which of the following strucures is not used for excretion

3 / 50

3. excretion29_which of the following is not true about transpiration

4 / 50

4. excretion35_Which of the following structures does not develop from the skin

5 / 50

5. excretion37_which of the following does not occur in hot weather

6 / 50

6. excretion44_Animals that are not able to maintain their body temperature are

7 / 50

7. excretion19_which of the following is used for excretion in whales

8 / 50

8. excretion5_in which organ is protein or amino acid deaminated for excretion

9 / 50

9. excretion1_Removal of products of metabolic activities which may become harmful to the body is called

10 / 50

10. excretion38_which of the following processes generates body heat during cold weather

11 / 50

11. excretion33_which of the following is not a function of the skin in man

12 / 50

12. excretion18_which of the following is not used for excretion in plants

13 / 50

13. excretion42_Animals that are not able to regulate their body temperature are

14 / 50

14. excretion30_which of the following is not correct about excretion

15 / 50

15. excretion27_Which of the following is excretory structure in flatworms like tapeworms

16 / 50

16. excretion10_which of the following is used for excretion in fish

17 / 50

17. excretion11_Which of the following is not used for excretion in mammals

18 / 50

18. excretion15_which of the following is used for excretion in cockroach

19 / 50

19. excretion16_which of the following is used for excretion in earthworm

20 / 50

20. excretion23_Which of the following trio are used for excretion in man

21 / 50

21. excretion25_Which of the following is used for excretion in spider

22 / 50

22. excretion13_which of the following is used for excretion in flatworm

23 / 50

23. excretion7_which of the following strucures is not used for excretion

24 / 50

24. excretion12_Which of the following is not used for excretion in mammals

25 / 50

25. excretion17_which of the following is used for excretion in crustacea

26 / 50

26. excretion21_Which of the following is used for excretion in shrimp, a crustacean

27 / 50

27. excretion24_which of the following group is used for excretion in man

28 / 50

28. excretion6_which of the following is not a waste product in plants

29 / 50

29. excretion40_which of the following causes straightening of the skin hairs in cold weather

30 / 50

30. excretion9_which of the following isnot used for excretion

31 / 50

31. excretion14_which of the following is used for excretion in arachnids

32 / 50

32. excretion20_Which of the folowing isused for excretion in amoeba

33 / 50

33. excretion50_which of the following is not a function of the skin in man

34 / 50

34. excretion43_Animals that are able to maintain their body temperature

35 / 50

35. excretion45_Animals that are able to maintain their body temperature

36 / 50

36. excretion41_which of the following receptors is not present in the skin

37 / 50

37. excretion4_Which of the following terrestial animals does not use uric acid in excretion

38 / 50

38. excretion46_Which of the following is not a layer in the epidermis of the skin

39 / 50

39. excretion32_which of the following is not a function of the skin in man

40 / 50

40. excretion34_Which of the following structures does not develop from the skin

41 / 50

41. excretion2_Which of the following is not one of the main waste products in animals

42 / 50

42. excretion22_Which of the following pairs is used for excretion in man

43 / 50

43. excretion36_which of the following is not a good advice for the care of the skin

44 / 50

44. excretion31_Sebum is oily substance which lubricates hair and keeps it flexible. Which of the following secretes sebum

45 / 50

45. excretion26_which of the following is used for excretion in protozoa

46 / 50

46. excretion39_which of the following causes increased sweating

47 / 50

47. excretion47_which of the following are the two main layers of the skin

48 / 50

48. excretion3_which of the following waste products helps to conserve energy while excreting nitrogenous waste

49 / 50

49. excretion48_Which of the following is not a structure in the skin

50 / 50

50. excretion49_Which layer of the skin contains the blood vessles, nerves and glands

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