Practice: Movement in Plants

The pea plant has threadlike organs called tendrils. How do these tendrils demonstrate haptotropism?

  • ATendrils will react to touch stimulus by growing toward, and twining around, solid objects.
  • BTendrils will demonstrate haptotropism by their roots, growing toward a water source.
  • CTendrils will react to a light stimulus by growing toward a light source.

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