The abscission layer is composed of .........

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(D) The abscission layer is a specialized zone of cells that forms at the base of a petiole, fruit stalk, or flower stalk, leading to the separation o

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Parenchymatous cells

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(D) The abscission layer is a specialized zone of cells that forms at the base of a petiole, fruit stalk, or flower stalk, leading to the separation of the organ from the plant body. This layer consists of thin-walled, small, and non-lignified $Parenchymatous$ cells. During the process of abscission, the middle lamella of these cells dissolves due to the action of enzymes like cellulase and pectinase, which weakens the connection and allows the organ to fall off.

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