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ShareIn botany, a leaf is an above-ground plant organ specialized for photosynthesis.
A leaf is typically flat and thin, to expose the chloroplast containing cells to light over a broad area, and to allow light to penetrate fully into the tissues.
Leaves are also the sites in most plants where respiration, transpiration, and guttation take place.
For more information about the topic Leaf, read the full article at Wikipedia.org, or see the following related articles:
Deciduous — In botany, deciduous plants, principally trees and shrubs, are those that lose all of their foliage for part of the year. In some cases, the foliage ... > read more
Leaf vegetable — Leaf vegetables, also called potherbs, greens, or leafy greens, are plant leaves eaten as a vegetable, sometimes accompanied by tender petioles and ... > read more
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Cotyledon — A cotyledon is a significant part of the embryo within the seed of a plant. Upon germination, the cotyledon usually becomes the embryonic first ... > read more
Chlorophyll — Chlorophyll is a green photosynthetic pigment found in plants, algae, and cyanobacteria. Chlorophyll absorbs mostly in the blue and to a lesser ... > read more
Poison ivy — Poison ivy is a woody vine that is well-known for its ability to produce urushiol, a skin irritant which for most people will cause an agonizing, ... > read more
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Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Leaf at Wikipedia.org. See the Wikipedia copyright page for more details.
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