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Worksheets

Plant Hormones

Total questions: 20

Worksheet time: 12mins

Name
Class
Date
1.

Auxins are responsible for _____________ of a plant

a)

Colour change

b)

Watering

c)

Phototropism

d)

Growth

2.

Phototropism is

a)

The plant response to water

b)

The plant response to light

c)

The plant response to gravity

d)

The plant response to soil

3.

Which hormone promotes seed germination?

a)

abscisic acid

b)

ethylene

c)

gibberellin

d)

auxin

4.

Where is auxin formed

a)

Tip of stem and root

b)

Leaves

c)

Embryo

d)

All

5.

Promotes seed dormancy

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

6.

Stimulates cell division and

lateral (<---->) growth

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

7.

Stimulates dramatic stem growth

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

8.

In the story 'Jack and the beanstalk', Jack grew a beanstalk that grew way into the clouds. If I wanted to try and grow one myself, which plant hormone would I give my beanstalk?

a)

Cytokinesis

b)

Ethylene

c)

Auxins

d)

Gibberellins

9.

What happens when you place an over ripe banana in a fruit bowl with other fruit?

a)

Nothing will happen

b)

The other fruit will grow in size

c)

Ethylene gas will cause the fruit to grow mold

d)

Ethylene gas will cause the other fruit to ripen

10.
Which plant hormone is a gas?
a)
auxin
b)
gibberellin
c)
ethylene
d)
cytokinin
11.

Causes the enlargement of fruits

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

12.

This hormone may oppose the effects of auxins. This is why you trim the tops off of stems (where auxin is produced) to have more lateral growth.

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

13.

What is the role of auxin that causes a plant to bend towards light?

a)

The concentration of auxin in the plant increases when there is light.

b)

Auxin causes uniform growth on every stem.

c)

Auxin causes cells that are on the dark side to grow faster.

d)

Auxin causes the increase in the number of plant cells.

14.
A period of a plant when is does NOT grow
a)
spore
b)
stamen
c)
nutrient
d)
dormancy
15.

Which of the following are plant hormones

a)

Auxin

b)

Cytokinin

c)

Gibberellin

d)

Abcissic acid, ethylene

e)

All

16.

which plant hormone produces opposite effects?

a)

dormancy and cotyledons

b)

dormancy and germination

c)

auxin and cytokins

d)

auxins and ethylene

17.

My tomato seed wont grow. Which hormones can I use to make it start growing?

a)

Auxins

b)

Cytokinins

c)

Ethylene

d)

Abscisic acid

e)

Gibberellins

18.

I want to stop my plant from growing so tall. I want it to grow from the sides. Which hormone should I STOP using?

a)

Auxins

b)

Cytokinins

c)

Ethylene

d)

Abscisic acid

e)

Gibberellins

19.

My banana has become black and soft. This is because of

a)

Auxins

b)

Cytokinins

c)

Ethylene

d)

Abscisic acid

e)

Gibberellins

20.

My plant is losing a lot of water because it is hot today. Which hormone should I give it so that it will stop losing water?

a)

Auxins

b)

Cytokinins

c)

Ethylene

d)

Abscisic acid

e)

Gibberellins