Tropisms

Tropisms are...

• Plant responses to stimuli

• Types of neurone

• Types of plant hormone

• Types of plant

If a tropism is positive...

• The plant moves towards the stimulus

• The plant moves away from the stimulus

If a tropism is negative...

• The plant moves towards the stimulus

• The plant moves away from the stimulus

In shoots, auxin...

• makes cells elongate

• inhibits elongation

In roots, auxin...

• makes cells elongate

• inhibits elongation

In shoots, auxin accumulates...

• on the lit side

• on the shaded side

Where is auxin produced?

• Root tips

• Shoot tips

• xylem

• phloem

How does auxin move through the plant?

• Diffusion

• Osmosis

• Active transport

Where is the auxin produced in this shoot tip?

• A

• B

• C

Where will auxin accumulate and make the cells elongate?

• A

• B

• C