CBSE Class 11 Biology: Explain the Main Functions of a Leaf

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A plant consists of different parts. It includes roots, stem, branches, leaves, buds, flowers, and fruits.

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Leaf A green plane structure of a plant that makes its food is known as a leaf. It is an important part of the plant.

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Parts of leaf A leaf has different parts. These include petiole, lamina and veins.

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Petiole The part of the leaf which is attached to the stem is known as the petiole.

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Lamina The expanded green part of the leaf is known as the lamina.

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Veins Lines present on the leaf are known as veins.

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Functions of leaf The main function of the leaf is photosynthesis. Photosynthesis is the process of preparing food.

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Plants contain a green color substance called chlorophyll. It absorbs sunlight during photosynthesis.

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Plants prepare food materials by using Carbon dioxide, water and sunlight. This process is known as photosynthesis.

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Plants send out excess water through small tiny pores called stomata.

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The loss of water from plants is called transportation. This process helps to cool the plant.

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Stomata of the leaves exchange gases like Carbon dioxide and Oxygen during photosynthesis and respiration.

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Leaves store the food materials that are prepared during photosynthesis.

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