Question

Genetically dwarf plants can be made long by the application of ______.

Options

• Auxins

• Cytokinins

• Gibberellins

• Vernalin

Answer 1

Genetically dwarf plants can be made long by the application of gibberellins.

Explanation:

Gibberellins are powerful growth-promoting hormones that primarily stimulate cell elongation and division within the internodes of plant stems. When applied to genetically dwarf varieties of plants (like dwarf pea or maize plants), they overcome their genetic limitations and trigger rapid stem elongation, making them grow as tall as normal varieties. In contrast, auxins focus on apical dominance and root initiation, while cytokinins primarily promote cell division rather than extreme elongation.