Question

Read the following statements on plant growth and development:
A. Parthenocarpy can be induced by auxins. B. Plant growth regulators can be involved in promotion as well as inhibition of growth. C. Dedifferentiation is a pre-requisite for re-differentiation. D. Abscisic acid is a plant growth promoter. E. Apical dominance promotes the growth of lateral buds.

• A. A, C, E only
• B. A, D, E only
• C. B, D, E only
• D. A, B, C only

Hint:

Auxins = Parthenocarpy. Abscisic acid = Inhibitor. Apical dominance = Suppresses lateral buds.

Answer 1

The Correct Option is D

A. True: Auxins can induce parthenocarpy (fruit development without fertilization).
B. True: Plant growth regulators (hormones) can stimulate or inhibit growth depending on the hormone and concentration.
C. True: Dedifferentiation (loss of specialized structure and function) is necessary before cells can re-differentiate into new cell types.
D. False: Abscisic acid is a growth inhibitor, involved in stress responses like drought tolerance.
E. False: Apical dominance suppresses lateral bud growth, favoring growth of the main stem.