Please help me understand this?

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answers:
Carson say: Phototropism is a plants orientation in response to light. It is positive if it is going towards the light and negative if it is going away from the light

Gravitropism is the same thing but with gravity.

So in this photo the place bellow ground that say light and gravity would be labeled negative phototropism and positive gravitropism (because the plant is going away from light but towards gravity) and the areas above ground would be labeled positive phototropism and negative gravitropism
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