| A | B |
|---|
| seed | a plant embryo enclosed in a coating with its own source of nutrients |
| embryo | multi-cellular organism in its earliest stages of development |
| germination | beginning growth of a new plant from a spore or seed (sprouting) |
| seed coat | tough outer covering that protects a seed |
| cotyledon | food storing part of a seed used by an embryo until the plant can produce its own food |
| seed dispersal | . scattering or spreading |
| cuticle | waxy coating on a leaf |
| stomata | small openings on the underside of leaves through which gases can move |
| guard cells | controls the opening and closing of stomata |
| chlorophyll | green pigment that absorbs sunlight needed for photosynthesis |
| tap root | one large deep main root with smaller roots branching off |
| root cap | covers the tip of a root, protecting the it from injury |
| root hairs | long, threadlike extensions of cells on the surface of a root |
| xylem | carries food from the leaves to all parts of the plant |
| phloem | carries water and nutrients up from the roots |
| chorloplasts | cell structure containing chlorophyll |
| transpiration | the movement of water vapor out of a plant and into the air |
| photosythesis | process plants use to convert light energy into chemical energy (sugar) |
| respiration | process in which chemical reactions break down food molecules and release stored energy |
| herbacrous | plants with green fleshy stems |
| woody | plants with stiff, sturdy stems, usually covered with bark |
| spore | single reproductive cell that is protected by a hard water-tight covering |
