CBSE NCERT Notes Class 6 Biology: Define Petiole and Lamina

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Leaf A green, expanded, broad part of a plant that prepares food is called a leaf.

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The leaf is an important part of a plant because it performs photosynthesis, which is essential for the survival of both plants and animals.

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The main parts of the leaf are the petiole, lamina and veins.

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Petiole The part of the leaf attached to the stem is the petiole. It is a thin stalk that attaches a leaf to a plant.

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Functions Petiole joins the leaf to the stem.

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It can twist the leaf to turn towards sunlight. It gives support to leaves.

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Lamina The expanded and broad part of the leaf is the lamina.

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Lamina is a thin and flat part of the leaf. It contains chlorophyll, therefore involved in photosynthesis. Lamina has veins. These veins extend from base to tip of the leaf.

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Functions It prepares food materials by the process of photosynthesis. It has veins that supply water and mineral nutrients to all lamina cells.

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