Question Bank - Agriculture Officer

Here's the question bank on all the agriculture officer topics.

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Which of the following auxin is used for root formation?

A.
IBA
B.
IAA
C.
NAA
D.
All of these

Solution:

The correct answer is IBA. Plant growth hormones or phytohormones are simple molecules with complex chemical composition. They regulate the growth and physiology of plants. Auxins:Indole-3-acetic acid (IAA): Prevents premature fruit drop, natural auxin hormone. Indole-3-butyric acid (IBA):Mainly used for root formation. Naphthaleneacetic acid (NAA):Fruit thinner, prevent fruit drop.

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