Elongation of internodes is inhibited by ..............

Gibberellins

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Morphactins

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Both (A) and (B)

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None of the above

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Solution

The correct option is B Morphactins
Morphactins have inhibitory effect on the stem elongation. Increases concentration produced dwarfing in the plants. Morphactins are a group of substances which act on morphogenesis and modulate the expression of plants. Chemically, they are the derivatives of fluorene compounds.

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