| Sycon – Scypha; Spongilla - Fresh water sponge; Euspongia - Bath sponge; Physalia -Portuguese man-of-war; Adamsia - Sea anemone; Pennatula - Sea-fan |
| 1. | Sea anemone | 2. | Sea-pen |
| 3. | Sea-fan | 4. | Sea-hare |
| 1. | Obelia | Metagenesis |
| 2. | Planaria | Free living with high regeneration capacity |
| 3. | Ancylostoma | Acoelomate |
| 4. | Nereis | Parapodia |
| Column-I | Column-II | ||
| A. | Gorgonia | P. | Brittle star |
| B. | Ophiura | Q. | Sea hare |
| C. | Aplysia | R. | Sea fan |
| D. | Dentallium | S. | Tusk shell |
| A | B | C | D | |
| 1. | P | R | S | Q |
| 2. | R | P | Q | S |
| 3. | P | R | Q | S |
| 4. | R | P | S | Q |
| 1. | Cnidarians are diploblastic, ctenophores are triploblastic. |
| 2. | Cnidarians are bilaterally symmetrical, ctenophores are radially symmetrical. |
| 3. | Cnidarians have a gastrovascular cavity, ctenophores do not. |
| 4. | Cnidarians possess cnidocytes, while ctenophores do not. |
| I: | Sponges are mostly asymmetrical. |
| II: | Coelenterates, ctenophores and adult echinoderms have radial symmetry. |
| III: | Annelids and arthropods exhibit bilateral symmetry. |
| 1. | Only I and II |
| 2. | Only I and III |
| 3. | Only II and III |
| 4. | I, II and III |
| Column-I | Column-II | ||
| A. | Organ level | (i) | Pheretima |
| B. | Cellular aggregate | (ii) | Fasciola |
| C. | Tissue level | (iii) | Spongilla |
| D. | Organ system level | (iv) | Obelia |
| A | |
| B |
| 1. | A is Medusa and is free-swimming; B is Polyp and is sessile |
| 2. | A is Polyp and is free-swimming; B is Medusa and is sessile |
| 3. | A is Medusa and is sessile; B is Polyp and is free-swimming |
| 4. | A is Medusa and is free-swimming; B is Polyp and is free-swimming |
| 1. | Portuguese men-of-war, sea anemone, and brain coral. |
| 2. | Tapeworm, roundworm, and hookworm. |
| 3. | Pearl oyster, devil fish, and flying fish. |
| 4. | Sea urchin, sea cucumber, and sea pen. |