How does auxin affect the growth of plant stems?(1 point)

Question

Responses

It builds up on the side of the stem that is away from the light source and stimulates growth.
It builds up on the side of the stem that is away from the light source and stimulates growth.

It builds on the side of the stem that faces the light source and stimulates growth.
It builds on the side of the stem that faces the light source and stimulates growth.

It builds up on the side of the stem that is away from the light source and inhibits growth.
It builds up on the side of the stem that is away from the light source and inhibits growth.

It builds up on the side of the stem that faces the light source and inhibits growth.
It builds up on the side of the stem that faces the light source and inhibits growth.

Answer 1

The correct response is:

It builds up on the side of the stem that is away from the light source and stimulates growth.

This accumulation of auxin on the shaded side of the stem causes that side to grow more, leading to the bending of the stem toward the light. This phenomenon is known as phototropism.