Phytohormone used to increase the stalk length in grapes and inducing early maturity in juvenile conifers also shows the following influence.

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Can induce stem elongation in rosette plants like cabbage and beet just before flowering

Shows polarised movement

Can be used to increase shelf life of cut shoots, vegetables and flowers

Increases the number of female flowers in cucumber

answer is A.

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Detailed Solution

Gibberellins has the ability to cause an increase in length of axis is used to increase the length of grapes stalks. Gibberellins, cause fruits like apple to elongate and improve its shape. Spraying juvenile conifers with GAs hastens the maturity period, thus leading to early seed production. Gibberellins also promotes bolting (internode elongation just prior to flowering) in beet, cabbages and many plants with rosette habit.

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