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Bio CH19
Biology CH19 The Importance of Leaves
Term | Definition |
---|---|
blade | the thin, flat part of a leaf |
epidermis | the outer layers of cells of a plant |
guard cell | green cells that change the size of the stomata in a leaf |
midrib | the main vein of a leaf |
palisade layer | the layer of long, green cells below the upper epidermis of a leaf |
spongy layer | the layer of round, green cells directly below the palisade layer of a leaf |
stoma | a small pore or opening in the lower epidermis of a leaf |
transpiration | the process of water passing out through the stomata of leaves |
wilting | when a plant loses water faster than it can be replaced |