Chapter Questions
What are the differences among hormones, enzymes, and vitamins?
Auxins, gibberellins, and cytokinins all promote growth. How does one distinguish among them?
How do hormonal herbicides function?
List several commercial applications of ethylene gas.
What are statoliths, and what role do they play in plant growth?
Distinguish among internally and externally induced growth movements, turgor movements, and dehydration movements.
How do day-neutral and intermediate-day photoperiod plants differ in their requirements?
What is the difference between dormancy and quiescence? How may dormancy be artificially broken?
What are the requirements for a seed to germinate?
How does phytochrome differ from other plant pigments?