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Plants 23.4
Plants Vocab Words Section 23.4
8
Biology
9th Grade
05/17/2012

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Term
Blade
Definition
thin, flattened part of a plant leaf
Term
Petiole
Definition
thin stalk that connects the blade of a leaf to a stem
Term
Mesophyll
Definition
specialized ground tissue found in leaves; performs most of a plant's photosynthesis
Term
Palisade Mesophyll
Definition
layer of cells under the upper epidermis of a leaf
Term
Spongy Mesophyll
Definition
layer of loose tissue found beneath the palisade mesophyll in a leaf
Term
Stomata
Definition
small opening in the epidermis of a plant that allows carbon dioxide, water, and oxygen to diffuse into and out of the leaf
Term
Transpiration
Definition
loss of water from a plant through its leaves
Term
Guard Cells
Definition
specialized cells in the epidermis of plants that controls the opening and closing of stomata
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