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BIO270 Plant Hormones

Total questions: 20

Worksheet time: 3600secs

Name
Class
Date
1.

Auxins are responsible for _____________ of a plant

a)

Colour change

b)

Watering

c)

Phototropism

d)

Growth

2.

Which of the following are plant hormones

a)

Auxin

b)

Cytokinin

c)

Gibberellin

d)

Abcissic acid, ethylene

e)

All

3.
Which hormone promotes seed germination?
a)
abscisic acid
b)
ethylene
c)
gibberellin
d)
auxin
4.

Stimulates cell division

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

5.

The growth hormone that is used to speed up the ripening of fruits for export is

a)

giberellin.

b)

ethylene.

c)

cytokinin.

d)

auxin.

6.

Where is auxin formed

a)

Tip of stem and root

b)

Leaves

c)

Embryo

d)

All

7.

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

8.

Breaks seed dormancy and promotes growth (can make fruit bigger)

a)

Auxin

b)

Gibberellin

c)

Cytokinins

d)

Ethylene

9.

When creating seedless fruit, what type of flowers are sprayed with gibberellins gas?

a)

pollinated

b)

unpollinated

c)

older

d)

small

10.

Which hormone promotes seed germination?

a)

abscisic acid

b)

ethylene

c)

gibberellin

d)

auxin

11.

Promotes seed dormancy

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

12.

Stimulates cell division and

lateral (<---->) growth

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

13.

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

14.

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

15.

What are the chemical messages in a plant called

a)

Hormones

b)

Oxygen

c)

Parenchyma cells

16.

Causes apical dominance

a)

abscisic acid

b)

auxin

c)

cytokinins

d)

gibberellin

e)

ethylene

17.

Two types of triple response to ethylene mutant are

a)

ein mutant

b)

ent mutant

c)

ctr mutant

d)

ctrl mutant

18.

A burst of ethylene is associated with the programmed destruction (apoptosis) on_______, ___________ and ____________.

(a)  

19.

Which hormones stimulate the aleurone to synthesis and secrete digestive enzyme that hydrolyze stored nutrients in the endosperms?

a)

Gibberrellins

b)

Auxin

c)

Cytokinins

d)

Abscisic acid

20.

What are the triple response to mechanical stress induced by ethylene?

a)

Stem elongation slows

b)

The stem chickens

c)

The stem thickens

d)

The stem curves