Question

Q. Auxin or gibberelin are chemicals belonging to a group of
A. weedicide
B. fertilizer
C. fungicides
D. plant growth regulator

Answer 1

Auxins and Gibberellins are 'Plant growth regulators'.

These are also called as Plant Hormones.

Hence, Option D. is correct.

^^"

Answer 2

D. plant growth regulator

is the answer.

Auxin or gibberelin are chemicals belonging to a group of plant growth regulator. Auxin is earliest known plant growth regulator and others such as gibberellins, cytokinins, abscisic acid (ABA) and ethylene known later.