| Column I | Column II | ||
| A | Limulus | P | Gregarious pest |
| B | Locusta | Q | Living fossil |
| C | Ancylostoma | R | Filaria worm |
| D | Wuchereria | S | Hookworm |
| A | B | C | D | |
| 1. | Q | P | S | R |
| 2. | P | Q | S | R |
| 3. | P | Q | R | S |
| 4. | Q | P | R | S |
| 1. | Skin is moist and without scales. |
| 2. | A tympanum represents the ear. |
| 3. | Eyes lack eyelids. |
| 4. | Heart is three chambered. |
| 1. | microvilli | 2. | fibrils |
| 3. | tentacles | 4. | canals |
| Statement I: | An undifferentiated layer, mesoglea, is present in between the ectoderm and the mesoderm in diploblastic organisms. |
| Statement II: | A third germinal layer, endoderm, in between the ectoderm and mesoderm, is present in triploblastic animals. |
| Column-I | Column-II | ||
| A. | Cnidaria | P. | Metamerism |
| B. | Mollusca | Q. | Tube feet |
| C. | Annelida | R. | Metagenesis |
| D. | Echinodermata | S. | Radula |
| A | B | C | D | |
| 1. | R | Q | P | S |
| 2. | P | Q | R | S |
| 3. | R | S | P | Q |
| 4. | P | S | R | Q |
| I: | Sponges are mostly asymmetrical. |
| II: | Coelenterates, ctenophores and adult echinoderms have radial symmetry. |
| III: | Annelids and arthropods exhibit bilateral symmetry. |