Interactive Video: Plant System Interactions - Plant Tropisms

What are the movements of plants towards or away from stimuli known as?

• Phototropism

• Tropisms

• Geotropism

• Hydrotropism

Which type of tropism is the response to light?

• Phototropism

• None of the above

• Hydrotropism

• Geotropism

Which tropism describes growth in response to gravity?

• Phototropism

• Geotropism

• Hydrotropism

• None of the above

What hormone is responsible for controlling plant growth responses?

• Adrenaline

• Auxin

• Estrogen

• Insulin

How does auxin affect plant growth?

• It has no effect on growth direction.

• It accumulates more on the shaded side, promoting faster growth there.

• It promotes equal growth throughout the plant.

• It decreases growth on the shaded side of the stem.

What is a positive growth response in plants?

• Growth away from light

• Growth towards a stimulus

• Growth against gravity

• None of the above

What is the role of auxins in agriculture?

• To stimulate root growth on plant cuttings

• To reduce the size of fruits

• To inhibit the growth of weeds

• To decrease fruit yields

How do plants benefit from tropisms?

• By growing towards or away from stimuli to find optimal conditions

• None of the above

• By communicating with other plants

• By moving physically towards the best conditions