MediumBotanyABA
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The phytohormone that is a carotenoid derivative is;
A
auxin.
B
gibberellin.
C
cytokinin.
D
abscisic acid.
Explanation
The plant growth regulators (PGRs) are small, simple molecules of diverse chemical composition. They could be indole compounds (indole-3-acetic acid, IAA); adenine derivatives (N6-furfurylamino purine, kinetin), derivatives of carotenoids (abscisic acid, ABA); terpenes (gibberellic acid, GA3) or gases (ethylene, C2H4).
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