Snapquiz - Tropism and Plant Hormones

Question 1. Which hormone controls both phototropism and gravitropism?

Oestrogen.
Ethylene.
Auxin.
Adrenaline.

Question 2. In which side of a plant root do the hormones controlling growth collect?

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

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

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

Question 4. Why do plants grow towards the light?

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

Question 5. Which of the following do plants not grow towards?

Water.
Light.
Gravity.
Sound.

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