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Here's Tindra's bean plant on the kitchen windowsill. It leans right over toward the glass, and nobody bent it.

This morning Tindra walked over to the window herself. But a plant can't walk, so how did it end up leaning toward the light?

In the pot beside it, she has pushed a seed in upside down. Which way will its root grow: up, or down?

And if the plant leaned and the root turns, then plants are doing something after all, even in their pots.

That's what this topic is about: how plants respond to what is around them, and how that is different from animals.

Okay, so are you ready to find out how plants respond?

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