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. Which of the following do plants not grow towards?

Gravity.
Light.
Sound.
Water.


Question 2. Gravitropism is growth towards what?

A heat source.
Down.
A light source.
Up.


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

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


Question 4. Which hormone controls both phototropism and gravitropism?

Oestrogen.
Adrenaline.
Auxin.
Ethylene.


Question 5. 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 shoots to bend.
Hormones cause leaves to pull the plant towards the light.


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