| A | B |
|---|
| Biology | the study of living things |
| bios- | Greek root meaning "life" |
| -logy | Greek suffix meaning "science of" |
| organisms | living things |
| habitats | regions where particular organisms normally live |
| botany | the study of plants |
| zoology | the study of animals |
| human anatomy | the study of the physical structure of the human body |
| physiology | the study of the function of the human body |
| taproot system | the primary root grows straight down and remains larger thant he secondary roots that branch off from it |
| fiberous root system | the primary root remains small and many slender roots grow from it in all directions |
| angiosperms | flowering seed plants |
| composite family | largest families of angiosperms; also calle the sunflower family |
| diciduous | trees that lose their leaves each fall and are bare all winter |
| herbaceous | nonwoody plants |
| evergreen trees | trees that retain their leaves throughout the winter |
| legumes | members of the "pea" family |
| nitrates | Plants can only use nitrogen that has been combined into special compounds of nitrogen and oxygen are called... |
| monocots | flowers with groups of four or five leaves |
| dicots | flowers with groups of three leaves (only) |
