Biology MCQ (General Science) Objective Q&A P21

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Page 21

1415201. An example of the modified underground stem is

A

Groundnut

B

Turnip

C

Carrot

D

Potato

D

Correct Answer: D. Potato

1260202. In plants, the receptor for detecting photoperiod is

A

Protein molecule

B

Gradient of K⁺

C

Sensory cell

D

Sensory organelles

A

Correct Answer: A. Protein molecule

1299203. The scientific name of Vitamin C is

A

Ascorbic acid

B

Lactic acid

C

Acetic acid

D

Muriatic acid

A

Correct Answer: A. Ascorbic acid

1440204. Watson and Crick are famous for their discovery of

A

Structure of DNA

B

Antibodies

C

Life history of Plasmodium Vivax

D

Vaccinia

A

Correct Answer: A. Structure of DNA

1274205. one of the following is the natural auxin?

A

2,4-D

B

IBA

C

NAA

D

IAA

D

Correct Answer: D. IAA

1283206. The phytohormone responsible for senescence

A

Gibberellin

B

Ethylene

C

Cytokinin

D

Auxin

B

Correct Answer: B. Ethylene

1398207. Which of the following is a terrestrial alga?

A

Spirulina

B

Sargassum

C

Chlorella

D

Terentepohlia

D

Correct Answer: D. Terentepohlia

2503208. Which of the following is a medicinal crop?

A

Sugarcane

B

Aloe vera

C

Cotton

D

Mahua

B

Correct Answer: B. Aloe vera

2528209. Organization related to “Read Data Book” or “Red List” is

A

U.T.E.S.

B

I.U.C.N.

C

I.B.W.C.

D

W.W.F.

B

Correct Answer: B. I.U.C.N.

1446210. Which of the following can indicates the air pollution of an area?

A

Bacteria

B

Algae

C

Fungus

D

Mosses

D

Correct Answer: D. Mosses

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