Tropism is the growth towards or away from a stimulus/environmental factor. The photo above is a picture of one of our trees. Since the wind always comes from that area, the tree has grown slanted, away from the direction of the wind. This is tropism since the tree grew away from an environmental factor. Geotropism is an example of tropism in relation to gravity. There are a lot of different types of tropism, like hydrotropism (water).
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