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Tropism

Published on Nov 22, 2015

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PRESENTATION OUTLINE

TROPISM

BY: HAVEN HORN

Gravitropism-
Gravitropism is a turning or growth movement by a plant or fungus in response to gravity.

Chemotropism-
Chemotropism is movement caused by chemical stimulus in organisms such as bacteria and plants.

Phototropism- Phototropism is directional growth in which the direction of growth is determined by the direction of the light source.

Thermotropism- oriented growth of an organism in response to heat.

Hydrotropism- oriented growth in response to water.

Thigmotropism- oriented growth of an organism in response to mechanical contact, as a plant tendril coiling around a string support.