Friday, April 19, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

General Science (Biology) MCQs For WBCS Prelims and Mains P14

131. Which of the following is not a physical change?
(A) Dissolving sugar in tea.
(B) Buring of wax in a candle
(C) Dehydrating milk to get milk powder.
(D) Sublimation of iodine.

Correct Answer: [B] Buring cf wax in a candle.

132. In respiration, cytosol plays a significant role in
(A) Krebs cycle
(B) Glycolysis
(C) Oxidative phosphorylation
(D) Oxidative decarboxylation of pyruvic acid.

Correct Answer: [B] Glycolysis.

133. The presence of pneumatophore (breathing root) is found in
(A) Hydrophytic plants
(B) Insectivores
(C) Mangrove plants
(D) Epiphytic plants.

Correct Answer: [C] Mangrove plants.

134. The ingredient that assists the clotting of blood is
(A) Vitamin D
(B) Vitamin K
(C) Vitamin A
(D) Folic acid.

Correct Answer: [B] Vitamin K.

135. The behavior of energy in an ecosystem can be conveniently termed as energy flow because
(A) Energy transformations are the one-way direction.
(B) Energy is the denominator of all kinds of system.
(C) Energy transformations are multidirectional in nature.
(D) None of the above

Correct Answer: [A] Energy transformations are the one-way direction.

136. In photosynthesis, Light reaction takes place in
(A) Stroma of chloroplast
(B) Ribosome
(C) Cytosol
(D) Grana of the chloroplast.

Correct Answer: [D] Grana of the chloroplast.

137. Cholesterol is a/an
(A) Steroid
(B) Diglyceride
(C) Saturated fat
(D) Unsaturated fat.

Correct Answer: [A] Steroid.

138. The 'Theory of Natural Selection' was proposed by
(A) A. I. Oparin
(B) C. R. Darwin
(C) J. B. S. Haldane
(D) G. J. Mendel.

Correct Answer: [B] C. R. Darwin.

139. From a cross between a pure Strain of plants with yellow peas and pure Strain of plants with green peas, how many different eggs are produced F1 Offspring?
(A) 1
(B) 2
(C) 4
(D) 8.

Correct Answer: [B] 2.

140. Personality development tends to be most rapid in the
(A) Middle age
(B) Adolescence
(C) Early childhood
(D) Adulthood.

Correct Answer: [B] Adolescence.


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