Gibberellic acid is known to carry out all these functions, except
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a
increase in yield in grapes and apple
b
speed up malting process
c
activation of α-amylase
d
promotes flowering in pineapple
answer is D.
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Detailed Solution
In pineapple flowering is promoted by auxins and ethylene but not gibberellins. Gibberellins increase the yield of apple, sugarcane and grapes, speeds up malting process in breweries by promoting the synthesis of α- amylase in breweries.