Q. One of the synthetic auxin is

 2674  171 AIPMTAIPMT 2009Plant Growth and Development Report Error

Solution:

NAA (Naphthalene Acetic Acid) and 2,4-D (2.4-dichlorophenoxy acetic acid) are synthetic auxins. The term auxin is applied to the indole-3-acetic acid (IAA) and to other natural and synthetic compounds having certain growth-regulating properties. IAA and IBA (Indole Butyric Acid) have been isolated from plants. All these auxins have been used extensively in agricultural and horticultural practices.