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Q. No.Assertion (A): The sensory neuron from toes to CNS is one of the longest nerve in our body.
Reason (R): Sensory nerve from synapse at both dendrites and axon terminal.
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 |
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Assertion (A): The imbalance in concentration of Na+, K+ and proteins generates resting potential.
Reason (R): To maintain the unequal distribution of Na+ and K+, the neurons use electrical energy.
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): To maintain the unequal distribution of Na+ and K+, the neurons use electrical energy.
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 |
52%
From NCERT
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Assertion (A): Corpus callosum connects the two cerebral hemispheres
Reason (R): Association area are responsible for complex functions like intersensory association, memory and communication
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): Association area are responsible for complex functions like intersensory association, memory and communication
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: Neuroanatomy |
91%
From NCERT
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Assertion (A): No image formation occurs at retina where the optic nerves leaves the eye.
Reason (R): Photoreceptors cells are not present in this region
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): Photoreceptors cells are not present in this region
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.
84%
From NCERT
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Assertion (A): A real and inverted image is obtained on the retina.
Reason (R): Lens of eye is naturally biconcave
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): Lens of eye is naturally biconcave
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.
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Assertion (A): Tympanic membrane separates the external ear from the middle ear.
Reason (R): Tympanic membrane is composed of connective 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 but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Tympanic membrane is composed of connective 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 but (R) is false.
4. Both (A) and (R) are false.
75%
From NCERT
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Assertion (A): The conditioned reflex is not present by birth
Reason (R): These action require learning
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): These action require learning
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: Motor Functions of Spinal Cord |
73%
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If the vagus nerves were cut, which of the following would be true?
1. The diaphragm would be paralysed
2. Adrenalin secretion by adrenal gland would cease
3. Hearing will be impaired
4. None of the above
1. The diaphragm would be paralysed
2. Adrenalin secretion by adrenal gland would cease
3. Hearing will be impaired
4. None of the above
Subtopic: Nervous System |
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Which statement about the vertebrate nervous system is false?
1. In a simple reflex, the sequence followed by information is sensory receptor sensory neuron, interneuron, mator neuron, muscle cells
2. After completely severing the brain from the spinal cord, reflex withdrawl of the foot from a painful stimulus could still occur
3. Relaxation of muscle is caused by nerve impulses in inhibitory neurons going to the muscle from spinal cord
4. The symphathetic nervous system activates the body responses to stress, e.g., by increasing heart beat and dereasing blood flow to the gut
1. In a simple reflex, the sequence followed by information is sensory receptor sensory neuron, interneuron, mator neuron, muscle cells
2. After completely severing the brain from the spinal cord, reflex withdrawl of the foot from a painful stimulus could still occur
3. Relaxation of muscle is caused by nerve impulses in inhibitory neurons going to the muscle from spinal cord
4. The symphathetic nervous system activates the body responses to stress, e.g., by increasing heart beat and dereasing blood flow to the gut
Subtopic: Nervous System | Motor Functions of Spinal Cord |
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A sound is perceived (realized) when:
1. The sound wave vibrates the ear drum
2. It is first created at its sources
3. The nerve impulse initiated by a sound wave from the inner ear reaches the brain
4. Vibrations within the inner ear activate a nerve impulse
1. The sound wave vibrates the ear drum
2. It is first created at its sources
3. The nerve impulse initiated by a sound wave from the inner ear reaches the brain
4. Vibrations within the inner ear activate a nerve impulse
69%
From NCERT
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