| A | B |
|---|
| photosynthesis | the process by which green plants use light energy, water, and carbon dioxide to produce food and oxygen |
| botany | the scientific study of plants |
| guard cells | the specialized cells that open and close a stoma |
| leaf | the structure growing from plants stems where food is processed for the plant |
| root | the underground part of a plant that absorbs water and nutrients from the soil and holds the plant firmly in place |
| root hair | a small, hairlike structure growing from the side of a root that helps absorb water and nutrients from the soil |
| stem | the part of a plant between the roots and the leaves acting as the support and transportation system of the plant |
| stomata | an opening in the underside of a leaf allowing gases to enter and leave |
| vein | a small, thin tube carrying water and food to and from the leaf of a plant |
| chlorophyll | the green material in chloroplasts which, when struck by light, releases the energy need to produce food |
| chloroplast | a green body found mostly in the leaves of plants, where photosynthesis takes place |
| respiration | the process by which living things use oxygen to release the stored energy in food |
| embryo | the tiny young plant in a seed |
| germinate | the process of growing from a seed into a plant embryo |
| life cycle | the growth stages of a living thing from the beginning to the end of its life |
| reproduce | to produce new living things of the same kind |
| seed | a tiny young plant and its stored food |
| seed coat | the protective outer covering of a seed |
| flower | the portion of a plant containing reproductive parts |
| fruit | the developed ovary covering and protecting the seeds |
| petal | the leaflike outer part of a flower that protects inner reproductive parts |
| pistil | the stemlike female reproductive part of a flower, with a sticky tip and thick bottom, that produces and contains the ovary |
| pollen | the tiny, male reproductive cells of a flower |
| pollination | the process of pollen reaching cells of a flower |
| seed dispersal | the process by which plant seeds are spread about |
| sepal | the green, leaflike plant structure covering and protecting flower buds |
| stamen | the stemlike, male reproductive part of a plant with a rounded tip that produces pollen, found in the flower |
| bulb | the thickened part of the stem covered by the base of leaves, containing food for the plant; usually found underground |
| geotropism | a plant's stem growing upward and its roots growing downward in response to gravity |
| phototropism | a plant's response of growing toward a light source |
