1.)Plants exhibit different types of responses to events that occur in the environment. Which of the following is an example of a nastic response?

a.

roots growing downward

b.

vine tendrils growing around a fence

c.

a Venus Flytrap snapping shut in response to touch

d.

a house plant growing toward a window


2.)Gibberellins cause plant growth by stimulating ____________________.

a.

mitosis

c.

the storage of starch

b.

cell elongation

d.

photosynthesis