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Plant Growth and DevelopmenT- Quiz 4

Total questions: 10

Worksheet time: 4mins

Name
Class
Date
1.

Which one includes growth promoters?

a)

Auxin, Cytokinin, ABA

b)

GA, Cytokinin, C2H4

c)

C2H4, ABA

d)

Auxin, Cytokinin, GA

2.

Which one include growth inhibitors?

a)

ABA, Cytokinin

b)

GA, IAA

c)

ABA, C2H4

d)

None

3.

The hormone responsible for phototropism is –

a)

Auxin

b)

C2H4

c)

ABA

d)

GA

4.

The phenomenon of apical dominance is strengthened by –

a)

Removal of the tip

b)

Removal of leaves

c)

Auxin production

d)

Production of fruits

5.

If a shoot cutting is treated with auxin, which of the following is likely to result?

a)

Extensive root production

b)

Suppression of apical dominance

c)

Growth of lateral buds

d)

Bolting of the shoot

6.

Go through the following statements –

I. Promotes flowering in pineapple

II. Used to prepare weed free lawn

III. Promotes the abscission of older mature leaves and fruits

The above functions are carried out by –

a)

GA

b)

C2H4

c)

ABA

d)

Auxin

7.

Which GA was the first Giberrellin to be discovered?

a)

GA1

b)

GA2

c)

GA3

d)

GA4

8.

Gibberellins have many effects. Which one of the following is not an effect of gibberellins in plants?

a)

Bolting

b)

Delay senescence

c)

Increase the grapes stalk

d)

Induces dormancy

9.

The fruits can be left on the tree longer so as to extend the market period. This is due to which function of GA?

a)

Bolting

b)

Delay senescence

c)

Internodal elongation

d)

Parthenocarpy

10.

Which of the following hormones causes fruits like apple to elongate and improve its shape –

a)

GA

b)

ABA

c)

NAA

d)

2, 4 D