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Q.

Internodal elongation prior to flowering in plants with rosette habit is promoted by which of the following phytohormone? 

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a

Auxins 

b

Gibberellins  

c

Cytokinins.  

d

Ethylene

answer is B.

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Detailed Solution

Gibberellins promote bolting in plants with rosette habit. They promote the elongation of internodes prior to flowering in plants like cabbage, beet etc. 

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