Posted inunclassified Biology: Sense Organs Vol 2 Posted by By Agodirin October 6, 2024 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 22 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950 Created by Agodirin Biology: Sense Organs Vol 2 1 / 50 1. sense55_the part of the tongue that tastes sour is A) middle back B) side front C) side back D) tip The back sides of the tongue are primarily responsible for detecting sour tastes. 2 / 50 2. sense56_What is the correct sequence for the perception of smell in mammals? A) chemical to olfactory nerve to brain B) dissolved chemical to sensory cells to olfactory nerve to brain C) dissolved chemicals to auditary nerve to brain D) dissolved chemicals to sensory cells to brain The correct sequence involves dissolved chemicals being detected by sensory cells in the nasal cavity, which then send signals through the olfactory nerve to the brain. 3 / 50 3. sense68_which of the following is not correct about short sightedness A) they can only see far objects B) the light rays fall short of the retina C) they are corrected by concave or diverging lens D) they eyeball is too long People with short-sightedness (myopia) can see near objects clearly but struggle with distant ones 4 / 50 4. sense62_which of the following is correct about what happens in the eye when the eye is focusing on a near object A) the lens becomes shorter and fatter B) the light rays converge behind the retina C) the light rays converge before the retina D) the lens becomes longer and thinner To focus on near objects, the ciliary muscles contract, causing the lens to become thicker and more curved. 5 / 50 5. sense92_which of the following is not good advice for the ears A) treat nose infection promptly B) immunze children C) avoid loud sounds D) use earphones to listen to musci While using earphones isn't inherently bad, it can lead to hearing damage if played at high volumes for prolonged periods. 6 / 50 6. sense74_which of the following conditions requires bifocal lens A) hypermetropia B) presbyopia C) cataract D) astigmatism Bifocal lenses are often prescribed for presbyopia to aid in seeing both near and far. 7 / 50 7. sense66_which of the following happens when there is dim light in the environment A) the pupils dilate B) the lens becomes longer C) the lens becomes shorter D) the pupils constrict In dim light, the pupils dilate to allow more light to enter the eye for better vision. 8 / 50 8. sense79_which of the following is not good advice for the eyes A) avoid reading tiny prints B) avoid rubbing C) take vitamin A D) read in dim light Reading in dim light can strain the eyes and is generally not recommended 9 / 50 9. sense72_which of the following is not correct about long sightedness A) it is corrected by concave lens B) they can see only distant objects C) the light rays converge behind the retina D) the eyeball is too short Long-sightedness is corrected by convex lenses, not concave lenses. 10 / 50 10. sense69_which of the following refers to short-sightedness A) astigmatism B) myopia C) cataract D) hypermetropia Myopia is the condition where distant objects appear blurry. 11 / 50 11. sense82_which of the following is not involved in bending of the eye towards the retina A) lens B) cornea C) fovea D) acqueous humor The fovea is a small pit in the retina responsible for sharp central vision, but it does not participate in bending light. The cornea, aqueous humor, and lens all play roles in refraction. 12 / 50 12. sense53_the part of the tongue that tastes bitterness is A) middle back B) side back C) side front D) tip The back of the tongue (especially the middle back) is most sensitive to bitter tastes 13 / 50 13. sense76_which of the following is not correct about presbyopia A) it comes with old age B) the lens cannot accommodate C) it is corrected with bifocal glasses D) the lens is soft In presbyopia, the lens becomes harder and less flexible over time. 14 / 50 14. sense83_which of the following is not involved in maintaining balance and posture A) Malleus B) sacculus C) endolymph D) utriculus The malleus is one of the bones in the middle ear and is involved in hearing, not balance. The sacculus, utriculus, and endolymph are involved in maintaining balance 15 / 50 15. sense64_in what situation will an object be visible to the eyes A) if the light rays from the object convert before or after the blind spot B) if the light rays from the object convert on the retina C) if the light rays from the object coverge before or after the retina D) if the light ray from the object converge on the blind spot For an object to be visible, light rays must focus on the retina, allowing the brain to interpret the image. 16 / 50 16. sense77_Which of the following occurs when the curvature of the lens of the eye becomes uneven A) color blindness B) cataract C) presbyopia D) astigmatism Astigmatism results from an uneven curvature of the lens or cornea, causing blurred vision 17 / 50 17. sense51_the nerve that is involved with smell A) median nerve B) auditary nerve C) optic nerve D) olfactory nerve The olfactory nerve is responsible for transmitting smell information from the nasal cavity to the brain. 18 / 50 18. sense93_A person who cannot detect a particular smell or scent is A) odour-blind B) nose-bleeder C) presbyopia D) nosy Odour-blindness refers to the inability to detect certain smells. 19 / 50 19. sense73_which of the following is a disease where the accomodation of the lens of the eye is impaired A) presbyopia B) hypermetropia C) cataract D) astigmatism Presbyopia is the age-related loss of the eye's ability to focus on nearby objects. 20 / 50 20. sense81_the organism that causes river blindness is A) onchocerca B) mosquito C) housefly D) spider Onchocerca volvulus is the parasitic worm that causes river blindness (onchocerciasis), typically transmitted by blackflies. 21 / 50 21. sense97_which of the following does not have a specific taste bud for perception in the tongue A) salt B) sugar C) pepper D) honey While the tongue has taste buds for sweet, salty, sour, and bitter, pepper does not have a specific taste bud but is often perceived through taste and pain receptors. 22 / 50 22. sense75_when a kind of cone receptor is absent in the eye the person has A) astigmatism B) color blindness C) presbyopia D) cataract Color blindness occurs when one or more types of cone photoreceptors are missing or not functioning 23 / 50 23. sense59_the structure in the eye that changes the focus of the lens to see both far and near objects is the A) lacrimal gland B) optic nerve C) ciliary muscle D) suspensory ligament The ciliary muscle adjusts the shape of the lens for focusing on objects at various distances. 24 / 50 24. sense85_which of the following is the correct order in the mechanism of vision A) cornea, optic nerve, lens, retina, visual center B) cornea, lens, retina, optic nerve, visual center C) lens, cornea, optic nerve, retina, visual center D) lens, cornea, retina, optic nerve, visual center Light first enters through the cornea, is focused by the lens onto the retina, then transmitted via the optic nerve to the visual center of the brain 25 / 50 25. sense95_which of the following have good sense of smell A) fish B) dogs C) man D) fowl Dogs have a highly developed sense of smell, significantly superior to that of humans. 26 / 50 26. sense61_which of the following focuses light to the retina of the eye A) cornea B) pupil C) lens D) iris The lens adjusts its shape to focus light onto the retina. 27 / 50 27. sense71_which of the following refers to opacity of the lens A) cataract B) myopia C) hypermetropia D) astigmatism A cataract causes the lens to become cloudy or opaque 28 / 50 28. sense52_the part of the tongue that tastes sweetness is A) side front B) side back C) middle back D) tip The tip of the tongue is generally associated with the sensation of sweetness. 29 / 50 29. sense94_the part of the brain responsible for perception of smell is A) thalamus B) olfactory lobe C) retina D) hypothalamus The olfactory lobes process the signals from the olfactory receptors and are responsible for the perception of smell. 30 / 50 30. sense57_The ability of the human eyes to focus far and near object is A) absorbtion B) refraction C) accommodation D) reflection Accommodation is the process by which the eye's lens changes shape to focus on objects at different distances. 31 / 50 31. sense96_the correct order in the mechanism of perceiving smell A) sensory cell, chemical dissolve in moist membrane, olfactory nerve, olfactory lobe B) chemical dissolve in moist membrane, sensory cells, olfactory nerve, olfactory lobe C) dissolved chemical, olfactory nerve, sensory cell, olfactory lobe D) chemical, olfactory nerve, olfactory lobe Smell perception begins with chemicals dissolving in the moist membrane, activating sensory cells, which send signals via the olfactory nerve to the olfactory lobe. 32 / 50 32. sense86_which of the following is not correct about the mechanism of vision A) the part of the brain where vision is recognized is the visual center B) the cornea, acqueuos , lens and vitreous all refract light rays towards the retina C) the blind spot is where the optic nerves penetrates the back of the eye D) the image formed on the retina is upright The image formed on the retina is inverted (upside down) before being processed by the brain, which corrects it. 33 / 50 33. sense58_which of the following is not involved in vision A) auditory nerve B) visual center of the brain C) lens D) retina The auditory nerve is involved in hearing, not in vision. The visual center of the brain, retina, and lens are all involved in the visual process. 34 / 50 34. sense90_which of the following is damaged by very loud noise or sound leading to deafness A) auditory nerve B) pinna C) tympanic memberane D) semicircular canal Loud noises can damage the auditory nerve or the hair cells within the cochlea, leading to hearing loss. 35 / 50 35. sense87_which of the following animals does not have eyes that shine at night A) tiger B) chicken C) owl D) cat Chickens do not possess a tapetum lucidum, the reflective layer that allows for night vision, unlike owls, cats, and tigers. 36 / 50 36. sense67_cataract of the eye affects which structure in the eye A) iris B) pupil C) cornea D) lens A cataract leads to clouding of the lens, affecting vision. 37 / 50 37. sense91_which of the following is not a cause of deafness A) Malaria B) syphillis C) loud music D) wax in ear While loud music, earwax buildup, and syphilis can lead to hearing problems, malaria is not directly associated with deafness. 38 / 50 38. sense99_Persons that lack the ability to tell the taste of substances are A) astigmatism B) non-tasters C) tasteless D) presbyopia Taste-blindness or non-tasters refers to the inability to perceive certain tastes 39 / 50 39. sense63_which of the following is correct about what happens in the eye when the eye is focusing on a far or distant object A) the light rays converge before the retina B) the lens becomes shorter and fatter C) the lens becomes longer and thinner D) the light rays converge behind the retina When focusing on distant objects, the ciliary muscles relax, making the lens flatter and thinner. 40 / 50 40. sense89_which of the following is not involved in maintaining balance and posture A) incus B) semicircular canal C) otolith D) endolymph The incus is one of the three bones in the middle ear that aid in hearing, not in maintaining balance. 41 / 50 41. sense60_the structure in the eye that holds the lens in place is the A) pupil B) iris C) cornea D) suspensory ligament The suspensory ligaments (or zonules) attach the lens to the ciliary body, holding it in place 42 / 50 42. sense98_the correct order in the mechanism of perceiving taste A) substance dissolve in saliva, taste bud, sensory cells, glossopharyngeal nerve, brain B) substance dissolve in saliva, taste bud, sensory cells, auditory nerve, brain C) substance dissolve in saliva, taste bud, olfactory nerve, brain D) substance dissolve in saliva, taste bud, sensory cell, glossopharyngeal nerve, olfactory lobe Taste begins when a substance dissolves in saliva, activates taste buds, sends signals to sensory cells, travels via nerves to the brain. 43 / 50 43. sense80_which of the following is not good advice for the eyes A) when reading the source of light should be from the back B) Do not read while lying on bed C) protect the eye from infection D) when reading place the book at 30-50cm distance It is better for light to come from the front or side to avoid glare and help with visibility. 44 / 50 44. sense100_A substance used to test for genetic inheritance of inability to taste is A) phenylthiocarbimide(PTC) B) starch C) Salt D) thyroxine PTC is commonly used in genetic studies to determine the ability to taste certain compounds, as its perception is inherited. 45 / 50 45. sense78_which of the following is not correct about color blindness A) it is sex-linked inheritance B) it manifests in males only C) the person will not be able to identify some colors D) it occurs when a rod receptor is absent from the retina Color blindness is related to cone receptors, not rod receptors 46 / 50 46. sense84_which of the following is required for night vision A) Vitamin C B) vitamin A C) Vitamin D D) vitamin K Vitamin A is essential for the production of rhodopsin, a pigment in the retina that is crucial for low-light (night) vision. 47 / 50 47. sense88_which of he following is the correct order of the mechanism of hearing A) pinna,tympanic memberane, ossicles, cochlea, auditory nerve, brain B) pinna, tympanic memberane, cochlea, ossicles, auditory nerve, brain C) pinna, cochlea, tympanic memberane, ossicles, auditory nerve, brain D) pinna, ossicles,tympanic memberane, cochlea, auditory nerve, brain Sound waves enter through the pinna, vibrate the tympanic membrane, transferred by ossicles, and then transmitted to the cochlea and auditory nerve, reaching the brain 48 / 50 48. sense65_which of the following happens when there is too much light in the environment A) the lens becomes darker B) the lacrimal gland secretes more C) the pupils become wider D) the pupils constrict In bright light, the pupils constrict to reduce the amount of light entering the eye. 49 / 50 49. sense54_the part of the tongue that tastes salt is A) middle back B) tip C) side front D) side back The sides of the front part of the tongue are typically sensitive to salty flavors. 50 / 50 50. sense70_which of the following refers to long sightedness A) astigmatism B) hypermetropia C) cataract D) myopia Hypermetropia (or hyperopia) is the condition where close objects appear blurry. 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