In flowering plants,senescence is an active d | vedclass

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(A) Senescence in plants is not merely a passive decay process but an active developmental phase. In the formation of tracheary elements (xylem vessel

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Differentiation of tracheary elements

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(A) Senescence in plants is not merely a passive decay process but an active developmental phase. In the formation of tracheary elements (xylem vessels and tracheids),the cells undergo programmed cell death to become hollow,dead structures that facilitate water transport. This process is a clear example of an active cellular developmental program where the cell's own machinery leads to its death to serve a functional purpose for the plant.

In flowering plants,senescence is an active developmental cellular process,which suggests growth and function. This is best exemplified by:

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