14.Plant Hormones - Tropisms Quiz

What are plant hormones also known as?

• Phytohormones

• Cytokinins

• Auxins

• Chlorophylls

What is phototropism?

• Growth response to light

• Growth response to temperature

• Growth response to gravity

• Growth response to water

What does a positive phototropism involve?

• Moving towards light

• Growing sideways

• Moving away from light

• Growing downwards

Where do auxins primarily concentrate in a plant stem when exposed to light?

• On the illuminated side

• At the base of the stem

• In the roots

• On the shaded side

What is geotropism also known as?

• Phototropism

• Thermotropism

• Hydrotropism

• Gravitropism

In a negative geotropism, which direction does the stem grow?

• Towards gravity

• Away from gravity

• Horizontally

• Downwards

What role do auxins play in plant growth?

• They absorb water

• They produce chlorophyll

• They elongate plant cells

• They inhibit growth

What happens to auxins in the roots when light is present?

• They increase growth

• They reduce growth

• They have no effect

• They promote photosynthesis

What is an example of an auxin mentioned in the text?

• Cytokinin

• Ethylene

• Indole Acetic Acid (IAA)

• Gibberellin

How can we observe phototropism in plants?

• By placing a plant near a window

• By watering the plant

• By placing a plant in the dark

• By rotating the plant