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Q. No.Identify A, B and C in the given figure showing sectional view of cochlea:
A
B
C
1.
Reissener’s membrane
Tectorial membrane
Basilar membrane
2.
Basilar membrane
Reissener’s membrane
Tectorial membrane
3.
Tectorial membrane
Basilar membrane
Reissener’s membrane
4.
Reissener’s membrane
Basilar membrane
Tectorial membrane
Subtopic: Inner Ear: Cochlea (OLD NCERT) |
81%
From NCERT
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What type of neuron is found in the human retina and olfactory membrane?
1. Unipolar
2. Bipolar
3. Multipolar
4. Pseudo-unipolar
1. Unipolar
2. Bipolar
3. Multipolar
4. Pseudo-unipolar
Subtopic: Nervous System |
94%
From NCERT
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Unmyelinated nerve fibre:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | is enclosed by a Schwann cell that does not form a myelin sheath around the axon |
| II: | is commonly found in autonomous and the somatic neural systems |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Nervous System |
86%
From NCERT
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The eye ball contains a transparent crystalline lens which is held in place by:
| 1. | iris anteriorly and choroid posteriorly |
| 2. | vitreous humor |
| 3. | sclera |
| 4. | ligaments attached to the ciliary body |
Subtopic: Basic Anatomy of Human Eye: 1 (OLD NCERT) |
89%
From NCERT
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Myelin sheath around axons in peripheral nervous system and in central nervous system is produced respectively by:
1. Schwann cells; microglia
2. oligodendrocytes; Schwann cells
3. Schwann cells; oligodendrocytes
4. satellite cells; astrocytes
Subtopic: Nervous System |
71%
From NCERT
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In the human eye:
I: The sclera regulates entrance of light into the eyeball.
II: The choroid makes colour vision possible.
III: The ciliary body controls the lens shape for near and far vision.
1. Only III is incorrect
2. Only I and II are incorrect
3. Only I and III are correct
4. I, II and III are correct
Subtopic: Basic Anatomy of Human Eye (OLD NCERT) |
57%
From NCERT
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Identify the correctly matched pairs:
| Part of human brain | Function | |
| I | Corpus callosum | Tract of nerve fibres connecting two cerebellar hemispheres |
| II | Thalamus | Major coordinating centre for sensory and motor signaling |
| III | Hypothalamus | Control of body temperature, urge for eating and drinking |
| IV | Limbic system | Equilibrium |
| V | Medulla | Pneumotaxic centre for regulation of breathing |
2. II and III only
3. I, III and V only
4. I, II, III and IV only
Subtopic: Hind & Mid Brain | Diencephalon | Cerebrum, EEG & Sleep |
From NCERT
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Given below is the chronological sequence of events in mechanisms of vision and hearing. The correct events are:
1. Only A
2. Only B
3. Both A and B
4. Neither A nor B
| A | Mechanism of vision | Light induces dissociation of the retinal from opsin → change in the structure of the opsin → membrane permeability changes → generation of action potentials in the ganglion cells through the bipolar cells → action potentials are transmitted by the optic nerves to the visual cortex. |
| B | Mechanism of hearing | Vibrations are transmitted through the ear ossicles to the round window → vibrations generate waves in the lymphs → this induces a ripple in the Reissner’s membrane → the hair cells press them against the basilar membrane → nerve impulses generated are transmitted to the auditory cortex. |
2. Only B
3. Both A and B
4. Neither A nor B
Subtopic: Huma Eye: Accommodation (OLD NCERT) | Human Eye: Adaptation (OLD NCERT) | Inner Ear: Cochlea (OLD NCERT) | Basic Anatomy of Human Eye (OLD NCERT) |
61%
From NCERT
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Select the correct statement regarding synapses:
| 1. | Impulse Transmission across a chemical synapse is always faster than that across an electrical synapse. |
| 2. | The membranes of presynaptic and postsynaptic neurons are in close proximity in an electrical synapse. |
| 3. | Electrical synapses are easier to regulate than the chemical synapses. |
| 4. | Chemical synapses do not use neurotransmitters |
Subtopic: Synapse |
85%
From NCERT
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Match List I with List II with respect to human eye.
Choose the correct answer from the options given below:
| List I | List II | ||
| A. | Fovea | I | Visible coloured portion of eye that regulates diameter of pupil. |
| B. | Iris | II. | External layer of eye formed of dense connective tissue. |
| C. | Blind spot | III. | Point of greatest visual acuity or resolution. |
| D. | Sclera | IV. | Point where optic nerve leaves the eyeball and photoreceptor cells are absent. |
| Options: | A | B | C | D |
| 1. | II | I | III | IV |
| 2. | III | I | IV | II |
| 3. | IV | III | II | I |
| 4. | I | IV | III | II |
Subtopic: Human Eye (OLD NCERT) | Basic Anatomy of Human Eye (OLD NCERT) |
78%
From NCERT
NEET - 2023
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