When the first walk from a brightly lit area into darkness, which of the following occur?
1. The pohtopsin of cones become bleached
2. Rod cells become hyperpolarized
3. Lateral inhibition caused by horizontal cells ceases.
4. Rhodopsin is still dissociated into retinal and opsin, and rods, are temporarily non-functional
Subtopic: Â Huma Eye: Accommodation (OLD NCERT) |
 56%
Please attempt this question first.
Hints
Assertion (A): In depolarization process, there is a psotive charge on the outer side of a nerve fibre and a negative charge on its inner side
Reason (R): During depolarization, permeability of plasma membrane increases for sodium ions so Na+ move to outer side of the membrane and K+ enter into the nerve fibre through it
1. Both A & R are true and the R is the correct explanation of the A.
2. Both A & R are true but the R is not the correct explanation of the A.
3. A is true statement but R is false.
4. Both A and R are false statements.
Reason (R): During depolarization, permeability of plasma membrane increases for sodium ions so Na+ move to outer side of the membrane and K+ enter into the nerve fibre through it
1. Both A & R are true and the R is the correct explanation of the A.
2. Both A & R are true but the R is not the correct explanation of the A.
3. A is true statement but R is false.
4. Both A and R are false statements.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Subtopic: Â Action Potential |
 70%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The pre-excitation potential difference between the outside and inside of a neuron is called:
1. Reaction potential
2. Resting potential
3. Spike potential
4. Action potential
1. Reaction potential
2. Resting potential
3. Spike potential
4. Action potential
Subtopic: Â Origin of Resting Membrane Potential |
 80%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Reflex action has all of the following features, except:
| 1. | Receiving of signal from a sensory organ |
| 2. | Transmission of impulsive into the central nervous system through effector organ |
| 3. | Carrying of signal from the central nervous system to the effector |
| 4. | Response to an involuntary peripheral nervous stimulation |
Subtopic: Â Nervous System |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Match List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (a) | Multipolar neuron | (i) | Somatic neural system |
| (b) | Bipolar neuron | (ii) | Cerebral cortex |
| (c) | Myelinated nerve fibre | (iii) | Retina of Eye |
| (d) | Unmyelinated nerve fibre | (iv) | Spinal nerves |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (ii) | (iv) | (iii) | (i) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4. | (ii) | (iii) | (iv) | (i) |
Subtopic: Â Neuroanatomy |
 67%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II |
| A. Peripheral neural system | P. Comprises of all nerves associated with brain and spinal cord |
| B. Somatic neural system | Q. Relays impulses from CNS to skeletal muscles |
| C. Visceral neural system | R. Transmits impulse from CNS to involuntary organs and smooth muscles |
| D. Autonomic neural system | S. Part of PNS where impulses travel from CNS to the viscera and from the viscera to the CNS |
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | R | S | P |
| 3. | R | S | P | Q |
| 4. | S | P | Q | R |
Subtopic: Â Nervous System |Â Autonomic Nervous System (OLD NCERT) |
 66%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Sympathetic and parasympathetic neural systems are divisions of:
| 1. CNS | 2. Somatic neural system |
| 3. Autonomic neural system | 4. Visceral neural system |
Subtopic: Â Autonomic Nervous System (OLD NCERT) |
 88%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
In a neuron, Nissl’s granules are seen in:
| I. Cell body | II. Dendrites | III. Axon |
| 1. I and II only | 2. I and III only |
| 3. II and III only | 4. I, II and III |
Subtopic: Â Nervous System |
 89%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Match each item in Column I with one in Column II and select the correct match from the codes given:
Code:
| Column I | Column II | ||
| A | Multipolar neuron | P | Embryonic stage |
| B | Bipolar neuron | Q | Retina |
| C | Unipolar neuron | R | Cerebral cortex |
| A | B | C | |
| 1. | P | Q | R |
| 2. | Q | R | P |
| 3. | R | Q | P |
| 4. | R | P | Q |
Subtopic: Â Nervous System |
 91%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Consider the given statements:
I: Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon.
II: Unmyelinated nerve fibre is not enclosed by a Schwann cell or a myelin sheath.
III: Myelinated nerve fibres are found in spinal and cranial nerves.
IV: Unmyelinated nerve fibres are commonly found in autonomous and somatic neural systems.
I: Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon.
II: Unmyelinated nerve fibre is not enclosed by a Schwann cell or a myelin sheath.
III: Myelinated nerve fibres are found in spinal and cranial nerves.
IV: Unmyelinated nerve fibres are commonly found in autonomous and somatic neural systems.
| 1. Only II is incorrect | 2. I and II are correct |
| 3. III and IV are incorrect | 4. All are correct |
Subtopic: Â Nervous System |
 66%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
© 2024 GoodEd Technologies Pvt. Ltd.