Match the name of the animal (Column-I), with one characteristic (Column-II), and the phylum/class (Column-III) to which it belongs:
| Column-I | Column-II | Column-III | |
| 1. | Ichthyophis | terrestrial | Reptilia |
| 2. | Limulus | body covered by chitinous exoskeleton | Pisces |
| 3. | Adamsia | radially symmetrical | Porifera |
| 4. | Petromyzon | ectoparasite | Cyclostomata |
Which one of the following categories of animals, is correctly described with no single exception in it?
| 1. | All bony fishes have four pairs of gills and an operculum on each side |
| 2. | All sponges are marine and have collared cells |
| 3. | All mammals are viviparous and possess a diaphragm for breathing |
| 4. | All reptiles possess scales, have a three-chambered heart, and are cold blood (poikilothermal) |