Assertion (A): | Choanocytes or collar cells line the spongocoel and the canals in poriferans. |
Reason (R): | Poriferans possess spicules and spongin fibres. |
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. |