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. In which side of a plant root do the hormones controlling growth collect?

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


Question 2. Phototropism is growth towards what?

Down.
Up.
A water source.
A light source.


Question 3. Why do plants grow towards the light?

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.
Hormones cause the side of the plant in the light to get shorter.


Question 4. Which hormone controls both phototropism and gravitropism?

Adrenaline.
Ethylene.
Oestrogen.
Auxin.


Question 5. What effect do hormones have on the growth of roots?

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


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