Chapter 46
Biology: Life on Earth with Physiology · 8 exercises
Problem 1
Compare phototropism and gravitropism in roots and shoots. How are the two stimuli sensed? How do these responses differ in each plant part?
4 step solution
Problem 2
What is apical dominance? How do auxin and cytokinin interact in determining the growth of lateral buds??
4 step solution
Problem 3
What is a phytochrome? How do the two forms of phytochrome help control the plant life cycle?
4 step solution
Problem 4
Which hormones cause fruit development? Which hormone causes ripening in bananas?
3 step solution
Problem 5
What is senescence? Describe some changes that accompany leaf senescence in the fall. Which hormone causes abscission?
3 step solution
Problem 6
What is a major agricultural use of gibberellin? Of ethylene?
2 step solution
Problem 7
How does salicylic acid help plants defend themselves?
5 step solution
Problem 8
What are day-neutral, long-day, and short-day plants?
4 step solution