A) Naphthalene acetic acid
B) Zeatin
C) 2,4-dichlorophenoxy acetic acid
D) Benzyl aminopurine
Correct Answer: B
Solution :
Zeatin is a naturally occurring cytokinin (type of plant growth regulator) isolated from the endosperm of a corn. It is remarkably known to be more active than any other cytokinin, while others growth regulators given in the potions such as 2, 4 dichlorophenoxy acetic acid (2, 4-D), Naphthalene Acetic Acid (NAA) and benzylaminopurine are all synthetic plant growth regulators.
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