| A | B |
|---|
| organ system | groups of organs working together |
| cell membrane | thin layer that surrounds the cell |
| nucleus | controls all the cell's activities |
| vacuole | large storage area filled with liquid |
| cytoplasm | jellylike substance that fills much of the cell |
| chloroplast | where food making occurs in plant cells |
| cell wall | the tough outer layer of a plant cell that gives it a rigid shape |
| mitochondrion | is the structure in which energy from food is released |
| photosynghesis | the food making process in plants |
| cell respiration | when energy from sugar (glucose) is released |
| tropism | a plant response to conditions in the enviroment (bending towards the light) |
