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Q. No.Consider the given statements:
Statement I:
In a neuron, Nissl’s granules are not present in dendrites.
Statement II:
Unmyelinated nerve fibre is not enclosed by a Schwann cell in the peripheral neural system.
Statement III:
Myelinated neurons conduct impulse at a higher velocity when compared to unmyelinated neurons.
1.
Only Statement I and Statement II are correct
2.
Only Statement III is correct
3.
Statement II and Statement III are incorrect
4.
Statement I, Statement II and Statement III are correct
Subtopic: Nervous System |
76%
Level 2: 60%+
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How many of the given receptors in the box are helpful in detecting chemicals?
Olfactory receptors, Gustatory receptors, Photoreceptors, Mechanoreceptors
1. One
2. Two
3. Three
4. Four
Olfactory receptors, Gustatory receptors, Photoreceptors, Mechanoreceptors
1. One
2. Two
3. Three
4. Four
72%
Level 2: 60%+
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Arrange the given layers in the order of their occurrence as the doctor cuts through the skull to reach the brain:
a. Pia mater
b. Dura mater
c. Arachnoid mater
1. b → a → c
2. b → c → a
3. a → b → c
4. c → a → b
a. Pia mater
b. Dura mater
c. Arachnoid mater
1. b → a → c
2. b → c → a
3. a → b → c
4. c → a → b
Subtopic: Nervous System | Neuroanatomy |
86%
Level 1: 80%+
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| Assertion (A): | The neural system of Hydra is better organised than insects. |
| Reason (R): | Insects have a brain along with a number of ganglia and neural tissues. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True, (R) is False. |
| 4. | (A) is False, (R) is True. |
Subtopic: Nervous System |
79%
Level 2: 60%+
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Which of the following is not correct for the axonal membrane, when a neuron is not conducting any
impulse, i.e., resting?
1. Comparatively more permeable to K+ ions
2. Permeable to negatively charged proteins present in the axoplasm
3. Nearly impermeable to Na+ ions
4. Negatively charged on its inner surface
impulse, i.e., resting?
1. Comparatively more permeable to K+ ions
2. Permeable to negatively charged proteins present in the axoplasm
3. Nearly impermeable to Na+ ions
4. Negatively charged on its inner surface
Subtopic: Origin of Resting Membrane Potential | Action Potential |
79%
Level 2: 60%+
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Inner parts of cerebral hemispheres and a group of associated deep structures like the amygdala, etc., form a complex structure which is concerned with:
(a) Olfaction
(b) Control of respiration
(c) Autonomic responses
(d) Expression of fear and rage
(e) Regulation of sexual behavior
(f) Gastric secretions
Select the correct option.
1. (a), (c), (d) and (e)
2. (d) and (e) only
3. (a), (b), (c) and (f)
4. (b), (c), (d) and (f)
(a) Olfaction
(b) Control of respiration
(c) Autonomic responses
(d) Expression of fear and rage
(e) Regulation of sexual behavior
(f) Gastric secretions
Select the correct option.
1. (a), (c), (d) and (e)
2. (d) and (e) only
3. (a), (b), (c) and (f)
4. (b), (c), (d) and (f)
Subtopic: Diencephalon |
Level 3: 35%-60%
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The optic nerve leaves the eye at a particular point. Read the following about this point.
(a) Abundant photoreceptor cells present
(b) Point is slightly above the posterior pole of the eyeball
(c) Macula lutea is present lateral to this point.
(d) It is medial to the posterior pole of the eye ball.
Choose the option which has all the correct ones from above.
1. a, b only
2. b, c only
3. a, c, d only
4. b, c, d only
(a) Abundant photoreceptor cells present
(b) Point is slightly above the posterior pole of the eyeball
(c) Macula lutea is present lateral to this point.
(d) It is medial to the posterior pole of the eye ball.
Choose the option which has all the correct ones from above.
1. a, b only
2. b, c only
3. a, c, d only
4. b, c, d only
62%
Level 2: 60%+
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Assertion (A): Parasympathetic and sympathetic neural systems have antagonistic effects on the organs.
Reason (R): Neurotrasmitters released by the axons of sympathetic and parasympathetic neural systems are of different nature.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Neurotrasmitters released by the axons of sympathetic and parasympathetic neural systems are of different nature.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
69%
Level 2: 60%+
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Assertion (A): Myelin sheath is produced by the Schawann cells
Reason (R):In myelinated nerve fibre, myelin sheath is present throughout
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason (R):In myelinated nerve fibre, myelin sheath is present throughout
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Nervous System |
61%
Level 2: 60%+
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Assertion (A): Repolarisation of the axonal membrane results in the development of positive charge on the outer side and negative charge on the inner side
Reason (R): Nerve impulse is another name for action potential
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Nerve impulse is another name for action potential
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Origin of Resting Membrane Potential | Action Potential |
86%
Level 1: 80%+
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