Question

What causes roots to grow downwords

Answer 1

Plants respond to gravity. This is know as gravitropism

Answer 2

Geotropism causes roots to grow downwards towards the gravity.

Geotropism is the influence of gravity on plant growth or movement. Simply put, this means that roots grow down and stems grow up. Geotropism comes from two words, “geo” which means earth or ground and “tropism” which means a plant movement triggered by a stimulus. In this case, the stimulus is gravity. Upward growth of plant parts, against gravity, is called negative geotropism, and downward growth of roots is called positive geotropism

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