| 1. | Cnidaria | 2. | Aschelminthes |
| 3. | Hemichordata | 4. | Echinodermata |
| 1. | Ventral, solid, double nerve cord |
| 2. | Notochord |
| 3. | Pharyngeal slits |
| 4. | Post anal tail |
| Column-I | Column-II | ||
| (a) | Exocoetus | (i) | Tympanum represents the ear |
| (b) | Trygon | (ii) | Marine bony fish |
| (c) | Salamandra | (iii) | Air sacs connected to lungs |
| (d) | Aptenodytes | (iv) | Cartilaginous marine fish |
| (a) | (b) | (c) | (d) | |
| 1. | (i) | (ii) | (iii) | (iv) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (ii) | (iv) | (i) | (iii) |
| 4. | (i) | (iii) | (ii) | (iv) |
| 1. | Porifers | Body with pores and canals in walls |
| 2. | Coelenterates | Presence of cnidoblasts |
| 3. | Platyhelminthes | Flat body and suckers |
| 4. | Arthropods | Chitinous exoskeleton, comb plates |
| Column-I | Column-II | ||
| A. | Cyclostomata | (i) | Mouth without jaws |
| B. | Chondrichthyes | (ii) | Exclusively oviparous |
| C. | Aves | (iii) | Gills without operculum |
| D. | Mammalia | (iv) | Unique in possessing hair |
| A | B | C | D | |
| 1. | (i) | (ii) | (iii) | (iv) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (i) | (iii) | (ii) | (iv) |
| 4. | (ii) | (i) | (iv) | (iii) |