Tropism

lexi pritchett-5th period-2/6/14

Tropism

The postive or negative accration of a plant or sessile animal toward

Geotropism

Is the growth of a plant or immovable animal in response to the force of gravity.

Hydrotropism

Growth or movement in a sessile organism toward or away from water, as of the roots of a plant.

Phototropism

Any postive or negative, movment of a part of a plant toward, or away from, light sources see helio tropism.

Thightropism

Is were one plant wraps or sticks to another plant