Eli5 – How do plants move to face the sun?

Question

If they don’t have muscles, tendons, and a skeletal system, how do plants like sunflowers move to face the sub? Or flowers close at night?

In: 6

Answer 1

A chemical called auxin, sunlight destroys auxin so the side of the plant facing the sun has less auxin, auxin is a growth hormone so the side away from the sun grows more bending the plant towards the sun https://youtu.be/3q6C8coA5yc