NEET Botany Plant Growth and Development Questions Solved

NEET - 2009

One of the synthetic auxin is 
(a) NAA
(b) IAA
(c) GA
(d) IBA

Audio Explanation:

The term auxin is applied to the indole-3-acetic acid (IAA) and to other natural and synthetic compounds having certain growth regulating properties.
NAA (Naphthalene Acetic Acid) and 2,4-D (2,4- dichlorophenoxy acetic acid) are synthetic auxins.
IAA and IBA (Indole Butyric Acid) have been isolated from plants. All these auxins have been used extensively in agricultural and horticultural practices.

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