Science glossary film: Auxin

A type of plant hormone that affects growth and development, often encouraging root or stem growth. For example, auxins influence the growth of stems toward light, known as phototropism. And against the force of gravity, known as geotropism. Auxins are often used by gardeners to root stem cuttings, and can also promote flowering and increase the number of fruit produced.

For example, auxins influence the growth of stems toward light, known as phototropism. And against the force of gravity, known as geotropism. Auxins are often used by gardeners to root stem cuttings, and can also promote flowering and increase the number of fruit produced.