Senescence as an active developmental cellula | vedclass

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(C) : Senescence is the process of ageing which is caused by cellular breakdown,increased metabolic failure,and increased entropy. It occurs in the pe

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vessels and tracheid differentiation

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(C) : Senescence is the process of ageing which is caused by cellular breakdown,increased metabolic failure,and increased entropy. It occurs in the period between reproductive maturity and death.Cell division followed by cell enlargement and differentiation precedes the actual separation.Senescence of cells in the distal region leads to the lignification of the cell wall.Tylose formation in tracheary elements and callose deposition in sieve elements,which occur in advance of abscission (i.e.,senescence),finally lead to actual separation.Thus,vessels and tracheid (tracheary elements) differentiation indicates senescence.

Senescence as an active developmental cellular process in the growth and functioning of a flowering plant,is indicated in

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