Biology MCQ Practice Set For UPSC | SSC | Rail | RRB | State PSC P22

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Page 22

1264211. According to Darwin, the unit of Natural Selection is

A

Gene

B

Species

C

Individual

D

Family

B

Correct Answer: B. Species

1297212. The number of cervical vertebrae in the mammal is

A

Seventy-seven

B

Eleven

C

Seven

D

Seventeen

C

Correct Answer: C. Seven

2532213. Who is the father of ‘Immunology’?

A

Robert koch

B

Louis pastuer

C

Edward jenner

D

Landsteiner

C

Correct Answer: C. Edward jenner

1373214. The following animal is called a friend of farmer :

A

Rhizobium

B

Honey-bee

C

Goat

D

Earthworm

D

Correct Answer: D. Earthworm

1275215. A viral disease is

A

Typhoid

B

Yellow Fever

C

Cancer

D

Leukemia

B

Correct Answer: B. Yellow Fever
Explanation:

Yellow fever is spread by a species of mosquito common to areas of Africa and South America. It is spread by Aedes aegypti mosquitoes, which also transmit dengue and Zika viruses.

1396216. Normal human blood is

A

Neutral

B

Variable

C

Acidic

D

Alkaline

D

Correct Answer: D. Alkaline

1435217. Vinegar is a dilute solution of

A

Ethanol

B

Acetic acid

C

Formaldehyde

D

Formic acid

B

Correct Answer: B. Acetic acid

1383218. The ingredient that assists the clotting of blood is

A

Vitamin D

B

Vitamin K

C

Vitamin A

D

Folic acid

B

Correct Answer: B. Vitamin K

1437219. Fixation of nitrogen is meant

A

Manufacture of nitrogen from the air

B

Conversion of nitrogen into nitric acid

C

Liquefaction of nitrogen

D

Conservation of atmospheric nitrogen into a useful component

D

Correct Answer: D. Conservation of atmospheric nitrogen into a useful component

1434220. A Cladogram depicts the hypothesis of

A

Genetic relationship

B

Taxonomic relationship

C

Evolutionary relationship

D

Phonetic relationship

C

Correct Answer: C. Evolutionary relationship

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