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Name the intrinsic and extrinsic factors that control growth ?


The intrinsic and extrinsic factors of growth are:

Intrinsic factors -  includes both genetic , intercellular factors like chemicals such as plant growth regulators.

Extrinsic factors - includes light, temperature, water, oxygen, nutrition etc.
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What is synergetic action of auxin and cytokinins ?

Explain the reason : if a plant is grown in dark, its stem is soft, weak, slender and yellow and its leaves turn yellow.

What is antagonistic action in plants?

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