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Question

Which of the following prevents falling of fruits?

A
GA3
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B
NAA
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C
Ethylene
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D
Zeatin
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Solution

The correct option is C NAA
Naphthalene acetic acid (NAA) is a synthetic form of the plant hormone auxin. There are different physiological effects of the auxins on the growth of the plants. These regulators prevent the falling or dropping of the fruits and vegetables. They increase the fall time for dropping of the fruits from the thin stems after the maturation or ripening of the fruit takes place.
Thus, the correct answer is option B.

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