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Plant Hormones

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AQA GCSE Biology Plant hormones and controlling growth

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Questions 12

Answers

1
How do auxins affect root cells?
Promote cell elongation
No effect
Causes cell death
Inhibit cell elongation
2
Which part of a germinating shoot (underground) will auxin collect?
The dark side
The light side
The top
The bottom
3
Shoots grow towards the light, what is the correct term for this?
Positive geotropism
Positive hydrotropism
Positive phototropism
Negative lightropism
4
On which side of a growing shoot will auxin accumulate?
The shaded side
The tip
The bottom
The light side
5
What is a stimulus?
The growth of a plant towards light.
When the environment stays the same.
A change in the environment a plant responds to.
A change in the behaviour of a plant.
6
Gibberellins are used...
... to promote flower production.
... to cause fruit ripening.
... in rooting powder.
... to increase fruit size.
7
What is the other prefix of gravitropism?
Hydro
Geo
Chemo
Photo
8
Where are auxins made?
Tips of roots and shoots
Stem
Tip of the shoot
Tip of the root
9
What is hydrotropism a response to?
Water
Light
Gravity
Heat
10
Which way would a plant grow if it exhibits negative geotropism?
Towards water
Towards (with) gravity
Away from (against) gravity
Away from light
11
What effect does auxin have on shoot cells?
Causes growth
Has no effect
Inhibits cell elongation
Promotes cell elongation
12
What are the group of hormones controlling plant growth?
Auxins
FSH
Axins
Oestrogen