| 1. | Sea anemone | 2. | Sea-pen |
| 3. | Sea-fan | 4. | Sea-hare |
| 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. | Calcium carbonate | 2. | Chitin |
| 3. | Collagen | 4. | Silica |
| Column I | Column II | ||
| A. | Asterias | i. | Earthworm |
| B. | Pila | ii. | Starfish |
| C. | Periplaneta | iii. | Snail |
| D. | Pheretima | iv. | Cockroach |
In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct?
| Genus Name | Two Characters | Phylum | ||
| 1. | Pila | (i) (ii) |
Body segmented Mouth with Radula |
Mollusca |
| 2. | Asterias | (i) (ii) |
Spiny skinned Water Vascular System |
Echinodermata |
| 3. | Sycon | (i) (ii) |
Pore bearing Canal system |
Porifera |
| 4. | Periplaneta | (i) (ii) |
Jointed appendages Chitinous exoskeleton |
Arthropoda |
| 1. | Echinodermata | 2. | Porifera |
| 3. | Cnidaria | 4. | Mollusca |
| Statement I: | Arthropoda is the largest phylum of Animalia. |
| Statement II: | Mollusca is the second largest animal phylum. |
| Statement III: | Ctenophora is the third largest animal phylum. |
| 1. | Statement I is correct; Statement II is correct; Statement III is incorrect |
| 2. | Statement I is correct; Statement II is correct; Statement III is correct |
| 3. | Statement I is correct; Statement II is incorrect; Statement III is incorrect |
| 4. | Statement I is incorrect; Statement II is correct; Statement III is incorrect |