Leaf Structure and Development — NEET Biology
📚 Practice ConceptThe leaf is a lateral, generally flattened structure borne on the stem. It develops at the node and bears a bud in its axil. The axillary bud later develops into a branch. Leaves originate from shoot apical meristems and are arranged in an acropetal order. They are the most important vegetative organs for photosynthesis.
Which of the following statements are correct about the structure of a typical leaf? S1: The leaf is a lateral, generally flattened structure, originating from the shoot apical meristem, and it bears a bud in its axil. S2: The leaf base in some leguminous plants may become swollen, a structure termed the pulvinus. S3: Stipules are characteristically found at the base of the petiole in all dicotyledonous plants. S4: The lamina provides rigidity to the leaf through its veins and serves as the primary site for photosynthesis. S5: The arrangement of veins and veinlets forming a network is known as parallel venation, which is typical of monocotyledons.
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