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Leaves are green, thin flattened lateral outgrowths of the stem. Leaves are the primary photosynthetic organs and the main site of transpiration. All the leaves of a plant together are referred to as phyllome.
Characteristics of leaf
1 Leaf is a lateral appendage of the stem.
2 It is borne at the node of the stem.
3 It is exogenous in origin.
4 It has limited growth.
5 It does not posses apical bud.
6 It has three main parts namely, leaf base, petiole and lamina.
7 Lamina of the leaf is traversed by vascular strands, called veins.
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