Question

Read the following statements on plant growth and development.

1. Parthenocarpy can be induced by auxins.
2. Plant growth regulators can be involved in promotion as well as inhibition of growth.
3. Dedifferentiation is a pre-requisite for redifferentiation.
4. Abscisic acid is a plant growth promoter.
5. Apical dominance promotes the growth of lateral buds.

Choose the option with all correct statements.

Options

• A, B, C only

• A, C, E only

• A, D, E only

• B, D, E only

Answer 1

A, B, C only

Explanation:

It is true that auxins can cause parthenocarpy, or the formation of fruit without fertilisation. Growth is either stimulated or inhibited by plant growth regulators (PGRs). Although they are linked processes, dedifferentiation is a prerequisite for re-differentiation. In reality, abscisic acid (ABA) is a growth inhibitor rather than a promoter. Auxins from the apical bud cause apical dominance, which is the suppression of lateral bud growth.