Reference Article

from Wikipedia, the free encyclopedia

Leaf

In 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.

Note: This article excerpts material from the Wikipedia article "Leaf", which is released under the GNU Free Documentation License.

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last updated on 2014-11-24 at 12:39 am EST

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