2025 Plant Growth and DevelopmentDevelopment, Differentiation and PGRs Medium Question 7 of 85 in Plant Growth and Development

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.
Choose the option with all correct statements.

A A, B, C only
B A, C, E only
C A, D, E only
D B, D, E only

The answer is A.

Solution

A, B, and C are true. D is false (ABA is an inhibitor), E is false (apical dominance suppresses lateral buds).

Auxins induce parthenocarpy (A is true). Phytohormones act as promoters or inhibitors (B is true). Differentiated parenchymal cells must dedifferentiate into meristems before redifferentiating (C is true). ABA is an inhibitor (D is false). Apical dominance inhibits lateral buds (E is false).

Concept Plant Growth Principles

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85 questions from this chapter have appeared across 24 exam years.