| Term | Definition |
| study of farmland | agronomy |
| science of internal structure | anatomy |
| study of human beings | anthropology |
| study of bacteria | bacteriology |
| study of chemistry | biochemistry |
| science or study of plants | botany |
| science that deals with cells | cytology |
| study of organisms and their environments | ecology |
| deals with the formation and development of embryos | embryology |
| study of insects | entomology |
| study of genes | genetics |
| the study of reptiles and amphibians | herpetology |
| study of fish | ichthyology |
| study of microorganisms | microbiology |
| study of fungi | mycology |
| study of the ocean | oceanography |
| study of fossils | paleontology |
| deals with classification | taxonomy |
| deals with viruses | virology |
| study of animals | zoology |