Exam 31: Plant Responses to Internal and External Signals

Most scientists agree that global warming is under way; thus, it is important to know how plants respond to heat stress. Which of the following would be a useful line of inquiry to try to improve plant response to and survival of heat stress?

In order for a plant to initiate chemical responses to herbivory,

According to the acid growth hypothesis, auxin works by

In cases where plants exhibit generalized defense responses in organs distant from the infection site, this is termed

The apical bud of a shoot produces ________, resulting in the inhibition of lateral bud growth.

When growing plants in culture, IAA is used to stimulate cell enlargement. Which plant growth regulator has to now be added to stimulate cell division?

All of the following can function in signal transduction in plants except

When an arborist prunes a limb off a valuable tree, he or she usually paints the cut surface. The primary purpose of the paint is to

What do the results of research on gravitropic responses of roots and stems show?

Many plants flower in response to day-length cues. Which of the following statements best summarizes this phenomenon?

Which of the following plant growth responses is primarily due to the action of auxins?