Which of the following option shows the correct labelling of the parts of leaf marked as A, B, C and D.
A. A - Lamina, B - Axillary bud, C - Stipule, D - Leaf base
B. A - Lamina, B - Stipule, C - Axillary bud, D - Leaf base
C. A - Lamina, B - Axillary bud, C - Stipule, D - Pedicel
D. A - Leaflet, B - Axillary bud, C - Stipule, D - Leaf base
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Correct Answer : A.
Leaf is the main photosynthetic organ of the plant. In the given figure of leaf, the part marked as A, B, C and D are respectively lamina, axillary bud, stipule and leaf base. Lamina or leaf blade is green and expanded portion of the leaf. In the middle of the lamina, a strong vein called midrib is present which extends from its base or apex. Axillary bud is borne at the axil of a leaf and is capable of developing into a branch shoot or flower cluster. Stipule is a small leaf-like appendage to a leaf, typically borne in pairs at the base of the leaf stalk. Leaf base is the lower part of the lamina, where it is attached to the petiole or stem.