Q. No.Consider the given two statements:
Statement I:
Photopic vision and colour vision is the function of rods in the human eye.
Statement II:
Scotopic [twilight] vision is the function of cones in the human eye.
1.
Both Statement I and Statement II are correct
2.
Both Statement I and Statement II are incorrect
3.
Statement I is correct but Statement II is incorrect
4.
Statement I is incorrect but Statement II is correct
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| Statement I: | The point where the optic nerve leaves the human eyeball is called as the blind spot. |
| Statement II: | This area has only cones with highest visual acuity in human eye. |
| 1. | Both Statement I and Statement II are correct |
| 2. | Both Statement I and Statement II are incorrect |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
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1. canal of Schlemm, and is filled with aqueous humor.
2. anterior chamber, and is filled with vitreous humor.
3. aqueous chamber, and is filled with aqueous humor.
4. vitreous chamber, and is filled with vitreous humor.
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| I. | Light induces dissociation of retinal from opsin. |
| II. | There is a change in the permeability of the membrane of photoreceptors. |
| III. | Potential differences are generated in the photoreceptor cells. |
| IV. | Action potential is generated in the ganglion cells through the bipolar cells. |
| V. | Optic nerve transmits impulse to visual cortex. |
| VI. | Neural impulses are analysed and the image formed on the retina is recognised based on earlier memory or experience. |
| 1. | I → III → II → IV → V → VI → VII |
| 2. | I → II → IV → III → V → VI → VII |
| 3. | I → II → III → IV → V → VI → VII |
| 4. | I → II → III → IV → V → VII → VI |
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1. Malleus
2. Incus
3. Stapes
4. All of them
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Statement I: Scala media is filled with endolymph.
Statement II: Scala vestibuli ends at round window and scala tynpani ends at oval window.
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
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Identify the correct statements regarding the events A and B in the given diagram:
| I: | A is depolarization and is caused by the influx of sodium ions. |
| II: | B is repolarization and is caused by the efflux of potassium ions. |
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
I: Embryonic stages
II: Retina
III: Dorsal root ganglion of spinal nerve
IV: Cerebral cortex
V: Olfactory membrane
| A | B | C | D | |
| 1. | I | II | III | IV |
| 2. | II | V | I | III |
| 3. | I | III | II | IV |
| 4. | III | IV | II | I |
| I: | The action potential, generated due to the depolarization of the axonal membrane, arrives at the axon terminal. |
| II: | Potassium ions enter the synaptic knob. |
| III: | Synaptic vesicles are activated and release neurotransmitter in the synaptic cleft. |
| IV: | Neurotransmitter binds to the receptor on the post-synaptic membrane. |
1. Only I, II and III
2. Only I, III and IV
3. Only II, III and IV
4. I, II, III and IV
| A: | Frontal lobe | Planning, reasoning and problem solving |
| B: | Parietal lobe | Integrating sensory information, including touch, temperature, pressure and pain |
| C: | Occipital lobe | Location of the primary visual cortex which receives visual information from the eyes |
| D: | Temporal lobe | Contains the primary auditory cortex, which receives auditory information from the ears |
| 1. | Only A and B | 2. | Only A, B and C |
| 3. | Only B, C and D | 4. | A, B, C and D |
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