Regarding the cell shown in the given figure:
| I: The name Cnidaria is derived from this cell | |
| II: The stinging capsule present in the cell is called as nematode | |
| III: These cells help cnidarians in anchorage, defence and in capturing the prey |
| 1. | While I and II are correct, III is incorrect |
| 2. | I, II and III are correct |
| 3. | Only II is incorrect |
| 4. | Only I is correct |
| a: | both polyp and medusa forms exist during its life cycle |
| b: | metagenesis, a sort of alternation of generation, is seen |
| c: | polyps produce medusae sexually and medusae form the polyps sexually |
| 1. | only a is correct | 2. | only a and b are correct |
| 3. | only c is correct | 4. | a, b and c are correct |