leaf arrangement

In botany, a leaf is an above-ground plant organ specialized for photosynthesis. For this purpose, a leaf is typically flat (laminar) and thin, to expose the cells containing chloroplast (chlorenchyma tissue, a type of parenchyma) 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. Leaves can store food and water, and are modified in some plants for other purposes. The comparable structures of ferns are correctly referred to as fronds. Furthermore, leaves are prominent in the human diet as leaf vegetables.
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Leaf is an above-ground plant organ specialized for photosynthesis.Leaf may also refer to: In BooksIn a book it is a single sheet, the left-hand page of which is the verso, and right-hand page is the rectoIn reading a book, it means "to turn the pages," as in "to leaf through a book."
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