Which of the following sets does not include all natural plant...

Which of the following sets does not include all natural plant growth regulators?

Options

A $\mathrm{GA}_3$ , IAA, Zeatin
BIAA, Kinetin, Zn
C $\mathrm{ABA}, \mathrm{GA}_7, \mathrm{GA}_3$
D $\mathrm{ABA}, \mathrm{GA}_3, \mathrm{IAA}$

Correct answer

B. IAA, Kinetin, Zn

Step-by-step solution

Plant growth regulators are small, simple molecules of diverse chemical composition, which in low concentration regulate growth, differentiation and development by promoting or inhibiting the same. Kinetin is a synthetic cytokinin and zinc

(\mathrm{Zn})

is not a natural plant growth regulator.

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