Question

Which one does not affect apical dominance?

• A. IAA
• B. IBA
• C. Gibberillins
• D. Indole Acetaldehyde

Answer 1

The correct option is A IAA

Apical dominance is a phenomenon in which central stem is dominant and lateral stems are suppressed. It is due to plant hormones produced in the tip of the shoot. Auxin hormones like IAA and IBA are responsible for apical dominance. Indole derivatives like indole-3- ethanol, indole-3-acetaldehyde have auxin like properties.

Thus, the correct answer is option C.