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ch. 23 section 4 vocab
n/a
8
Biology
10th Grade
12/16/2010

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Term
blade
Definition
thin, flattened section of a plant leaf that collects sunlight
Term
gaurd cell
Definition
specialized celll in the epidermis of plants that controls the opening and closing of stomata by responding to changes in water pressure
Term
mesophyll
Definition
specialized ground tissue that makes up the bulk of most leaves; performs most of a plant's photosynthesis
Term
palisade mesophyll
Definition
layer of tall, column-shaped mesophyll cells just under the upper epidermis of a leaf
Term
petiole
Definition
thin stalk by which a leaf blade is attached to a stem
Term
spongy mesophyll
Definition
loose tissue beneath the palisade layer of a leaf
Term
stoma
Definition
opening in the underside of a leaf that allows carbon dioxide and oxygen to diffuse into and out of the leaf
Term
transpiration
Definition
loss of water from a plant through its leaves
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