Question

The plant hormone whose concentration stimulates the cells to grow longer on the side of the shoot which is away from light is ______.

Options

• Cytokinins

• Gibberellins

• Adrenaline

• Auxins

Answer 1

The plant hormone whose concentration stimulates the cells to grow longer on the side of the shoot which is away from light is Auxins.

Explanation:

Auxins are plant hormones that accumulate on the shaded side of a shoot, stimulating cell elongation and causing the shoot to bend towards the light (phototropism). Other options are incorrect as they do not regulate directional growth in response to light.