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Cytokinins and Ethylene (ICSE BIOLOGY)

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Cytokinins were discovered by

a)

skoog & Miller

b)

Charles and Francis darwin

c)

F.W. Went

d)

None

2.

Cytokinins stimulate plant growth by cell division

a)

True

b)

No, By cell elongation

3.

Expansion of cotyledons is caused due to

a)

Cytokinins

b)

Gibberelins

c)

Ethylene

d)

Auxins

4.

Which hormones break seed dormancy and promote cell division

a)

Auxins and Gibberellins

b)

Gibberellins and Cytokinins

c)

Cytokinins

d)

Auxins and ethylene

5.

This hormone promote chlorophyll synthesis

a)

auxin

b)

Gibberellin

c)

Cytokinin

d)

Ethylene

6.

This hormone inhibits apical dominance

a)

Auxin

b)

Gibberellin

c)

Cytokinin

d)

Ethylene

7.

Ethylene is the only hormone which is a gas at ordinary temperature

a)

True

b)

False

c)

Can't say

8.

Ethylene gas was found by

a)

F.W. Went

b)

R. Gane

c)

R. Gain

d)

Charles Darwin

9.

Most widely used plant growth hormone

a)

Auxin

b)

Gibberellin

c)

Cytokinin

d)

Ethylene

10.

Ethylene induces flowering in mango.

a)

True

b)

False