In cockroach, brain is represented by
| 1. | Supra-oesophageal ganglia |
| 2. | Sub-oesophageal ganglia |
| 3. | Circumpharyngeal nerve ring |
| 4. | Supra-pharyngeal ganglion |
If the head of the cockroach is cut off, it will:
| 1. | still live as long as one week |
| 2. | still live as long as one month |
| 3. | regenerate its head completely |
| 4. | regenerate its head but not eyes |
| A | B | |
| 1. | Antennae | Compound eyes |
| 2. | Labrum | Labium |
| 3. | Antennae | Labium |
| 4. | Compound eyes | Mandibles |
| Assertion (A): | If the head of a cockroach is cut off, it will still live for as long as one week. |
| Reason (R): | The head holds a bit of a nervous system while the rest is situated along the ventral (belly-side) part of its body. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |