37. Plant Sensation and Response

The triple response to mechanical stress results in __________.

A graduate student growing plant cells in a laboratory dish wants them to __________; therefore, the student treats them with cytokinins.

With respect to plant hormones, what does 'saturation' mean?

Which plant response occurs as a result of the hormone auxin?

In shoots, branching is inhibited by __________ from the tip of a growing shoot, but this effect is countered by __________ from the roots.

As leaf lettuce matures, a tall flowering shoot extends beyond the basal, edible leaves. After the plant bolts like this, it no longer produces broad, tasty leaves. Suppose you want to prevent bolting so that you can harvest lettuce longer. You may want to prevent the plant from synthesizing __________.

What is the external stimulus that triggers thigmotropism in plants?

How are heat-shock proteins thought to work?

In addition to interacting with auxin in the control of apical dominance, newly discovered plant hormones help to establish mycorrhizal associations by attracting mycorrhizal fungi to the plant roots. What are these hormones called?

The production of organic solutes by plants is a response to __________.

The immediate, direct effect of auxin in cell elongation, according to the acid growth hypothesis, is to __________.

What is growth that results in curvatures of whole plant organs toward or away from stimuli called?

__________ appear to allow a plant cell to sense its orientation with respect to gravity.

When a plant that is not adapted to salty water is exposed to salty water, it will __________.

A callus will develop roots if you use a __________ auxin concentration and a __________ cytokinin concentration in the medium.