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10A SCIENCE QUIZ

Total questions: 10

Worksheet time: 4mins

Name
Class
Date
1.

1) Giberellins cause

a)

Shortening of genetically tall plants

b)

Elongation of dwarf plants

c)

Promotion of rooting

d)

Yellowing of young leaves

2.

2) The hormone which has positive effect on

apical dominance is:

a)

Cytokinin

b)

Auxin

c)

Gibberellin

d)

Ethylene

3.

3) Which one of the following hormones is

naturally not found in plants:

a)

2, 4-D

b)

GA3

c)

Gibberellin

d)

IAA

4.

4) Avena coleoptile test was conducted by

a)

Darwin

b)

N. Smit

c)

Paal

d)

F.W. Went

5.

5) To increase the sugar production in

sugarcanes they are sprayed with _______

a)

Auxin

b)

Cytokinin

c)

Gibberellins

d)

Ethylene

6.

6) _________ causes cell elongation, apical

dominance and prevents abscission.

a)

Ethylene

b)

Cytokinin

c)

Auxin

d)

Gibberellin

7.

7) _________ is a gaseous hormone involved

in abscission of organs and acceleration of

fruit ripening.

a)

Gibberellin

b)

Auxin

c)

Cytokinin

d)

Ethylene

8.

8) _________ causes stomatal closure.

a)

Abscissic acid

b)

Auxin

c)

Gibberellin

d)

Ethylene

9.

9) Gibberellins induce stem elongation in

_________ plants.

a)

Avena

b)

Rosette

c)

Corn

d)

None

10.

10) The hormone which has negative effect on

apical dominance is _________.

a)

Ethylene

b)

Auxin

c)

Cytokinin

d)

Gibberellin