Auxin

Auxins are plant hormones that promote root and stem growth. They play a crucial role in directing stem growth towards light (phototropism) and against gravity (geotropism). Gardeners often use auxins to root stem cuttings, enhance flowering, and increase fruit production.

What is the primary role of auxins in plant development?

• To change flower color

• To inhibit root growth

• To encourage root and stem growth

• To reduce leaf size

How do auxins affect plant stems in relation to light?

• They make stems grow horizontally

• They cause stems to grow towards light

• They have no effect on light

• They cause stems to grow away from light

What is the term for stem growth against gravity?

• Geotropism

• Phototropism

• Thigmotropism

• Hydrotropism

In gardening, how are auxins commonly used?

• To change leaf color

• To root stem cuttings

• To repel insects

• To increase soil nutrients

What is one benefit of using auxins in fruit production?

• Decreasing fruit size

• Increasing the number of fruits

• Changing fruit color

• Reducing fruit sweetness