Science - Tropisms

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   away      downwards      food      geotropism      gravity      light      more      stimulus      survival      towards      up      water   
A tropism is the growth of a plant in response to a such as light or gravity.
Tropisms improve a plant’s chances of and reproduction. The tropism is described as positive if the growth is the stimulus and negative if from the stimulus.
The two most important tropisms are phototropism and .
Phototropism is a plant's response to . It causes a plant's stem to grow towards the light. This is an advantage to the plant because the leaves get light resulting in greater production by photosynthesis.
Geotropism is a plant's response to . This causes the roots of a plant to grow . This greatly improves anchorage and increases the absorption of and minerals.