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. Gravitropism is growth towards what?

A heat source.
A light source.

Question 2. Which hormone controls both phototropism and gravitropism?


Question 3. In which side of a plant shoot do the hormones controlling growth collect?

The top side.
The side away from the sun.
The bottom side.
The side facing the sun.

Question 4. Why do plants grow towards the light?

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

Question 5. Phototropism is growth towards what?

A light source.
A water source.

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