Increasing the cytoplasmic levels of specific well-tolerated solutes, such as sugars, helps a plant to cope with __________.

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

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

Which hormone would a florist most likely spray on cut flowers to keep them fresh?

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 __________.

Increasing the proportion of unsaturated fatty acids in their membranes is a response of plants to __________.

How are heat-shock proteins thought to work?

Which of the following describes a plant's response to heat stress?

Seeds of many desert plants will not germinate until a heavy rain washes away their __________.