| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
| Assertion (A): | Neurons are excitable cells. |
| Reason (R): | Their membranes are in a polarised state. |
| 1. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 2. | Both (A) and (R) are True and (R) correctly explains (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
| 1. | are not found in human neural system |
| 2. | are surrounded by Schwann cells in peripheral neural system |
| 3. | are bipolar neurons |
| 4. | conduct impulse at a faster rate than myelinated neurons |
Consider the given two statements.
| Statement I: | Bipolar neurons are found in retina. |
| Statement II: | Unmyelinated neurons are not surrounded by Schwann cells in peripheral nervous system |
1. Only Statement I is correct.
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
Identify the correct statement:
| 1. | Unmyelinated neurons in PNS are not surrounded by Schwann cell |
| 2. | Electrical synapses, being faster, are more common in the human body |
| 3. | Pia mater is in contact with the brain tissue |
| 4. | The entire hindbrain and the midbrain constitute the brain stem |