| Term | Definition |
|---|
| blade | thin, flattened section of a plant leaf that collects sunlight |
| petiole | thin stalk by which a leaf blade is attached to a stem |
| mesophyll | specialized ground tissue that makes up the bulk of most leaves; performs most of a plant's photosynthesis |
| palisade mesophyll | layer of tall, column-shaped mesophyll cells just under the upper epidermis of a leaf |
| spongy mesophyll | loose tissue beneath the palisade layer of a leaf |
| stoma | opening in the underside of a leaf that allows carbon dioxide and oxygen to diffuse into and out of the leaf |
| guard cell | specialized cell in the epidermis of plants that controls the opening and closing of stomata by responding to changes in water pressure |
| transpiration | loss of water from a plant through its leaves |
| adhesion | attraction between unlike molecules |
| capillary action | the tendency of water to rise in a thin tube |
| pressure-flow hypothesis | hypothesis that considers plants in terms of where they produce and use materials from photosynthesis |
Combine with other sets
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