The portion of leaf that help hold leaf blade to light is:

Pulvinus

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Petiole

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Lamina

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Leaf base

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Solution

The correct option is B Petiole
B. Petiole
EXPLANATION: Petiole, a stem like part of the leaf, helps the leaf lamina or blade to lie in a horizontal position, that means it holds the leaf blade to light. Leaf blade is the green expanded part with midrib and veins. Petiole also can carry food made by the leaf to all parts of the plant.

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