| A | B |
| spontaneous generation | The theory that nonliving things produce living things |
| biogenesis | the theory that living things come only from living things |
| biology | the study of living things |
| zoology | the study of animals |
| botany | the study of plants |
| taxonomy | the classification of living things |
| entomology | the study of insects |
| Icthyology | the study of fish |
| Ornithology | the study of birds |
| herpetology | the study of reptiles and amphibians |
| mammalogy | the study of mammals |
| Horticulture | the art or science of cultivating fruits, flowers, and veggies |
| forestry | the science of cultivating forests and promoting the growth of forests |
| mycology | the study of fungi |
| microbiology | deals with living things that are to small to see with the naked eye |
| biochemistry | the study of the substances and their changes in living things |
| physiology | the study of the functions of the different parts of living things |
| cytology | the study of cells, their structure and function |
| Genetics | the branch of biology that deals with the principles of heredity |
| Ecology | deals with the relationship of living organisms to their enviroment and to each other |