Plant Growth and Development Question 28

28. One of the synthetic auxin is:

[2009]

(a) IAA

(b) GA

(c) IBA

(d) NAA

Show Answer

Answer : d

Hints & Solutions

(d) NAA is a synthetic auxin. Some of the most widely used weed killers are synthetic auxins. Synthetic auxin analogs include 1-naphthaleneacetic acid (NAA), 2, 4-dichlorophenoxy acetic acid (2, 4-D) and 2,4,5-trichlorophenoxy acetic acid (2,4,5- T).