Saturday, April 20, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

Quiz on General Science (Biology) For WBCS Prelims Exams P16


Page 16

1350151. Which one of the following is a viral disease?
A
Encephalitis
B
Oriental sore
C
Trypanosomiasis
D
Giardiasis
A
Correct Answer: A. Encephalitis
1372152. Which one of the following plants keeps its stomata open during the night and closed during the day?
A
Sunflower
B
Fern
C
Water Lily
D
Cactus
D
Correct Answer: D. Cactus
1382153. The presence of pneumatophore (breathing root) is found in
A
Hydrophytic plants
B
Insectivores
C
Mangrove plants
D
Epiphytic plants
C
Correct Answer: C. Mangrove plants
1254154. The disease caused by the deficiency of vitamin B12
A
Normocytic anemia
B
Pernicious anemia
C
Aplastic anemia
D
Sickle cell anemia
B
Correct Answer: B. Pernicious anemia
Explanation:

Pernicious anemia is a disease in red blood cells when the body can't absorb enough vitamin B12.

2524155. Which is not social pollution from the following?
A
Poverty
B
Communal riot
C
Rape
D
Agricultural pollution
D
Correct Answer: D. Agricultural pollution
1308156. Primary and Secondary growth is inhibited by
A
Abscisic acid
B
Cytokinins
C
Auxin
D
Gibberellins
A
Correct Answer: A. Abscisic acid
1412157. Kranz anatomy states that the plant has
A
C2 cycle
B
C3 cycle
C
C4 cycle
D
Both C3 and C4 cycle
C
Correct Answer: C. C4 cycle
2519158. Alexander Fleming discovered
A
penicillin
B
X-ray
C
streptomycin
D
telephone
A
Correct Answer: A. penicillin
1282159. Malaria parasite can best be obtained from the blood of its patient
A
When the temperature rises with rigor
B
Any time
C
One hour before rising of temperature
D
Five hours after the temperature
A
Correct Answer: A. When the temperature rises with rigor
1432160. Ozone depletion in Antarctica is caused by the formation of
A
Freon
B
Chlorine nitrate
C
Nitrogen dioxide
D
Sulfur dioxide
A
Correct Answer: A. Freon



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