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. Phototropism is growth towards what?

A light source.
A water source.

Question 2. Why do plants grow towards the light?

Hormones cause cell elongation on the shaded side of shoots.
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 shoots to bend.

Question 3. What effect do hormones have on the growth of shoots?

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

Question 4. Which hormone controls both phototropism and gravitropism?


Question 5. In which side of a plant shoot do the hormones controlling growth collect?

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

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