| Assertion (A): | The dark band on myofibril is anisotropic band. |
| Reason (R): | The light band on myofibril is isotropic band. |
| 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 |
| Assertion (A): | Myosin is not a part of thin filament. |
| Reason (R): | Meromyosin polymerises to form myosin. |
| 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 |
| Assertion (A): | The mechanism of muscle contraction can be explained by sliding-filament theory. |
| Reason (R): | Muscular contraction occurs by the sliding of thick filaments over the thin filaments. |
| 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 |
| Assertion (A): | The human skull is dicondylic. |
| Reason (R): | The human skull articulates with superior region of the vertebral column with the hald of two occipetal condyles. |
| 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 |