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  4. Falling of floral parts, leaves and fruits from the mother plant is called

Q. Falling of floral parts, leaves and fruits from the mother plant is called

 2126  224 J & K CETJ & K CET 2010Plant Growth and Development Report Error

Solution:

Abscission is the separation of a leaf, fruit or other part from the body of a plant. It involves the formation of an abscission zone, at the base of the part within which a layer of cells (abscission layer) breaks down. This process is suppressed so long as sufficient amounts of auxin flow from the part through the abscission zone. However, if the auxin flow declines, for example, due to injury or ageing, abscission is activated and the part becomes separated.