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Science chap. 13

How Plants Make Their Food and Live

chlorophyll the green coloring matter of leaves and plants, essential to the production of carbohydrates by photosynthesis, and occurring in a bluish-black form, C55H72MgN4O5
chloroplasts a plastid containing chlorophyll
glucose a sugar, C6H12O6, having several optically different forms, the common dextrorotatory form :occurring in many fruits, animal tissues and fluids, etc., and having a sweetness about one half that of ordinary sugar, and the rare levorotatory form
guard cells either of two specialized epidermal cells that flank the pore of a stoma and usually cause it to open and close
insect-eaters plants having modified leaves that trap and digest insects
leaf one of the expanded, usually green organs borne by the stem of a plant
phloem the part of a vascular bundle consisting of sieve tubes, companion cells, parenchyma, and fibers and forming the food-conducting tissue of a plant
photosynthesis (esp. in plants) the synthesis of complex organic materials, esp. carbohydrates, from carbon dioxide, water, and inorganic salts, using sunlight as the source of energy and with the aid of chlorophyll and associated pigments.
root a part of the body of a plant that develops, typically, from the radicle and grows downward into the soil, anchoring the plant and absorbing nutriment and moisture
root hairs an elongated tubular extension of an epidermal cell of a root, serving to absorb water and minerals from the soil
starch a white, tasteless, solid carbohydrate, (C6H10O5)n, occurring in the form of minute granules in the seeds, tubers, and other parts of plants, and forming an important constituent of rice, corn, wheat, beans, potatoes, and many other vegetable foods
stem the ascending axis of a plant, whether above or below ground, which ordinarily grows in an opposite direction to the root or descending axis
stoma mouth or ingestive opening, esp. when in the form of a small or simple aperture
transpiration the passage of water through a plant from the roots through the vascular system to the atmosphere
xylem a compound tissue in vascular plants that helps provide support and that conducts water and nutrients upward from the roots, consisting of tracheids, vessels, parenchyma cells, and woody fibers
Created by: daisy37311