Chapter 22

Give an example of asexual reproduction in a plant.

Explain how flowers, fruits, and seeds contribute to the reproductive success of angiosperms.

What is double fertilization? How does it increase the reproductive success of the parent plant?

How does an exclusive relationship between a plant and its pollinator benefit each partner? What are the risks of exclusivity?

An oak tree may produce thousands of acorns, which squirrels bury or eat. Why does the tree make so many acorns? Why might a tree whose seeds disperse far from the parent have better reproductive success than one whose seeds fall at the base of the parent plant?

How does seed dormancy promote reproductive success?

List the major plant hormones and describe some of their actions.

Describe three tropisms. Which hormone is common to all three?

Explain how plants grow toward light. Why is this response adaptive?

Develop a hypothesis that explains why it might be adaptive for a plant to flower in response to photoperiod rather than temperature.