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Plant Growth and Development

Multiple Choice Questions

The Avena curvature is used for bioassay of

GA₃
IAA
Ethylene
Ethylene

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During seed germination its stored food is mobilised by

ethylene
cytokinin
ABA
ABA

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3.
Match the following and select the correct answer.

Column I

Column II

A.

Centriole

1.

Infolding in mitochondria

B.

Chlorophyll

2.

Thylakoids

C.

Cristae

3.

Nucleic acid

D.

Ribozymes

4.

Basal body cilia of flagella

A

B

C

D

4

3

1

2

A

B

C

D

1

2

4

3

A

B

C

D

1

3

2

4

A

B

C

D

1

3

2

4

A	B	C	D
4	3	1	2

a) Centriole: In an organism with flagella and cilia, the position of these organelles is determined by the mother centriole which becomes the basal body.

b) Chlorophyll: Chlorophyll molecules are specially arranged in and around photosystem that is embedded in the thylakoid membrane of the chloroplast.

c) Cristae: These are folded in the inner membrane of mitochondria, which provides a large amount of surface area for chemical reaction.

d) Ribozymes (Ribonucleic acid enzymes) is an RNA molecule that is capable of catalysing the specific biochemical reaction of nucleic acids.

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A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white - coloured like albinos. Which of the following terms will you use to describe them?