Plant Hormones Quiz

Which hormone is responsible for coordinating and controlling growth in plants?

• Auxins

• Gibberellins

• Ethene

• Cytokinins

What is the purpose of phototropism in plants?

• To grow towards light

• To grow away from light

• To grow towards gravity

• To grow away from gravity

What is the purpose of negative gravitropism in plants?

• To grow towards light

• To grow away from light

• To grow towards gravity

• To grow away from gravity

Where are auxins produced in plants?

• In the tips of the shoots and roots

• In the leaves

• In the flowers

• In the stem

What effect do auxins have on cell elongation in shoots?

• Promote cell elongation

• Inhibit cell elongation

• No effect on cell elongation

• Cause cell division

What effect do auxins have on cell elongation in roots?

• Promote cell elongation

• Inhibit cell elongation

• No effect on cell elongation

• Cause cell division

What is the primary factor affecting the distribution of auxin in roots?

• Light

• Gravity

• Temperature

• Humidity

What happens to auxin distribution in a shoot placed on its side?

• Auxins accumulate along the lower side

• Auxins accumulate along the upper side

• Auxins are evenly distributed

• Auxins are not affected

What happens to the growth of the lower side of a shoot when auxins accumulate along the lower side?

• Grows faster

• Grows slower

• No effect on growth

• Stops growing

What happens to the growth of the lower side of a root when auxins accumulate along the lower side?

• Grows faster

• Grows slower

• No effect on growth

• Stops growing