What is the role of auxin in the control of phototropism in the shoot of a plant?

Question

Answer

The light side of the shoot contains more auxin. This stimulates cell division and so the light side of the shoot grows more.

Answer

More auxin is distributed on the shaded side of the shoot. This causes the cells on the shaded side to grow longer

Answer

Auxin is only made on the shaded side of the shoot. This causes the cells on the shaded side to grow longer.

Answer

The light side of the shoot contains more auxin and so grows less. This causes the shoot to bend towards the light.

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