Question

Q. What is secondary growth?

Answer 1

heya.....

your answer is:

●Secondary growth is seen in dicots.

●Secondary growth is the girth of the stems and roots of plants.

●Secondary growth is important to woody plants.

●Because they grow much taller than other plants and need more support in their stems and roots. 

●The increase in thickness of plant shoots and roots through the activities of the vascular cambium and cork cambium.

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Answer 2

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Secondary Growth :- Growth of root and stems in length with the help of apical meristem is called primary growth. Apart from primary growth most dicotyledons plant exhibit an increase in girth called secondary Growth.
Tissue involved in secondary growth are 2 lateral meristems: Vascular cambium and corck cambium.

<> Procambium :-

developed from apical meristem and produced Vascular or fascicular tissue system i.e primary vascular tissue.

<> Vascular cambium :-

Meristematic layer responsible for cutting off secondary Vascular tissue i.e. secondary xylem and phloem is called Vascular cambium. in young stem.

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