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  4. The stalk of a plant leaf is derived from which one of the following types of plant tissue?

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Q. The stalk of a plant leaf is derived from which one of the following types of plant tissue?

KVPYKVPY 2014

Solution:

The stalk of plant leaf (petiole) is derived from collenchyma. Collenchyma cells are elongated cells with irregular thick cell walls that provide structural support, particularly in growing shoots and leaves. Their thick cell walls are composed of the compounds cellulose and pectin.