Snapquiz - Tropism and Plant Hormones

This is the Snapquiz on Tropism and Plant Hormones. Click here or use the embedded video if you haven't watched the lesson yet.

Question 1. What effect do hormones have on the growth of roots?

The cells increase in width.
The cells slow their growth.
The cells recede.
The cells elongate.

Question 2. Why do plants grow towards the light?

Hormones cause the side of the plant in the light to get shorter.
Hormones cause leaves to pull the plant towards the light.
Hormones cause cell elongation on the shaded side of shoots.
Hormones cause shoots to bend.

Question 3. Gravitropism is growth towards what?

A light source.
A heat source.

Question 4. Which hormone controls both phototropism and gravitropism?


Question 5. Phototropism is growth towards what?

A water source.
A light source.

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