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Learn UPSC MCQs with answers [Page 14 of Department 54]

M

Mr. Dubey • 51.43K Points
Coach 

131) O2 released in the process of photosynthesis comes from

(A) CO2
(B) water
(C) sugar
(D) pyruvic acid
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Correct Answer - Option (B)

Explanation :
Photosynthesis is the process by which plants use the energy of light to produce carbohydrates and molecular oxygen (O2) from carbon dioxide (CO2) and water.

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M

Mr. Dubey • 51.43K Points
Coach 

132) Placenta is the structure formed

(A) by the union of foetal and uterine tissue
(B) by foetus only
(C) by fusion of germ layers
(D) None of these
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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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M

Mr. Dubey • 51.43K Points
Coach 

134) Neurospora is used as genetic material because

(A) it has short life cycle of 10 days
(B) the product of single meiosis can be easily analysed
(C) meiotic products are linearly arranged in the form of ordered tetrads
(D) is a diploid fungus
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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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M

Mr. Dubey • 51.43K Points
Coach 

136) N2 content is kept constant in the biosphere due to

(A) N2 fixation
(B) industrial pollution
(C) nitrogen cycle
(D) absorption of N2
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Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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M

Mr. Dubey • 51.43K Points
Coach 

137) Out of proteins, lipids and carbohydrates present in a cell membrane, what is true?

(A) Lipids are maximum
(B) Carbohydrates are minimum
(C) Carbohydrates are maximum
(D) All three are in equal proportion
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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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M

Mr. Dubey • 51.43K Points
Coach 

139) Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?

(A) Order
(B) Subspecies
(C) Class
(D) Genus
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Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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M

Mr. Dubey • 51.43K Points
Coach 

140) Prothrombin which helps in clotting of blood is released by

(A) lymphocytes
(B) erythrocytes
(C) monocytes
(D) blood platelets
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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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You are learning MCQ Questions of UPSC Department : 54 | Page : 14

Departments: Each department has 200 Multiple choice questions.
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