| A | B |
|---|
| cell wall | the thick covering of a plant cell made from nonliving fibers |
| cell membrane | a thin, living cell covering |
| nucleus | the cell part that controls activities of other cell parts |
| vacuole | storage sacs in a cell |
| cytoplasm | the jellylike fluid between the cell membrane and nucleus |
| chloroplast | the green cell part that traps sunlight |
| root hair | threadlike cell that grows from a plant root and takes in water and minerals from soil |
| transpiration | the loss of water through stomata |
| stomata | openings in a leaf through which gases and water enter and leave |
| chlorophyll | the green material in plants that absorbs energy from sunlight |
| photosynthesis | the process by which plants make sugar from sunlight, water, and carbon dioxide |
| respiration | the process by which cells change sugar and oxygen into carbon dioxide and water, thereby releasing energy |
| fertilization | joining of a sperm to an egg cell |
| conifer | a plant that produces seeds in cones |
| spore | a tiny cell that can grow into a new plant |
| bulb | an underground stem that grows fleshy storage leaves |
