Gujarati
6.Anatomy of Flowering Plants
normal

Leaves fall from the branches on account of

A

Completing their duration of life

B

Formation of abscission layer external to cork

C

Shortening of day time

D

Fall in atmospheric temperature

Solution

(b) Abscission is a special layer of parenchymatous cells appear at the base.

A protective layer of suberised thick walled cork cells is formed below the abscission layer to prevent infection.

Standard 11
Biology

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