| (a) | Units of life called spores were transferred to different planets including earth according to theory of spontaneous generation |
| (b) | Oparin and Haldane proposed that life arises from non-living organic molecules by chemical evolution |
| (c) | Psilophytin can be considered as ancestor of conifers |
| (d) | Coelacanth possibly evolved into the first amphibians |
| 1. | Charles Darwin | - | H.M. S Beagle |
| 2. | Alfred Wallace | - | Malay Archipelago |
| 3. | Thomas Malthus | - | An essay on principles of population |
| 4. | Equus | - | First one toed horse |