| Column-I | Column-II | ||
| A. | Sea Fan | P. | Adamsia |
| B. | Sea-anemone | Q. | Pristis |
| C. | Saw fish | R. | Gorgonia |
| D. | Flying Fish | S. | Exocoetus |
| A | B | C | D | |
| 1. | P | R | S | Q |
| 2. | R | P | S | Q |
| 3. | R | P | Q | S |
| 4. | P | R | Q | S |
| 1. | Sponges | 2. | Cnidaria |
| 3. | Mollusca | 4. | Echinodermata |
| Assertion(A): | Cnidarians and Echinoderms are diploblastic animals. |
| Reason(R): | Cnidarians and Echinoderms lack mesoderm. |
| 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. | (A) is False and (R) is False. |
| I: | All annelids are hermaphrodites. |
| II: | Bioluminescence is well-marked in cnidarians. |
| 1. | Only Statement I is correct. |
| 2. | Only Statement II is correct. |
| 3. | Both Statements are correct. |
| 4. | Neither Statements is correct. |
| I: | Cnidoblasts |
| II: | Triploblastic organisation |
| III: | Well developed polyp stage in life cycle |
| 1. | Only I and II are correct |
| 2. | Only III is correct |
| 3. | I, II and III are incorrect |
| 4. | I, II and III are correct |
| Assertion(A): | Muscle tissue is not seen in diploblastic animals. |
| Reason (R): | An undifferentiated layer, mesoglea, is present in between the ectoderm and endoderm in diploblastic animals. |
| 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; (R) is False |
| 4. | Both (A) and (R) are False |