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Learn CIVIL SERVICES MCQs with answers [Page 4 of Department 29]

31) Ozone hole refers to

(A) hole in ozone layer
(B) decrease in the ozone layer in troposphere
(C) decrease in thickness of ozone layer in stratosphere
(D) increase in the thickness of ozone layer in troposphere
Correct Answer - Option (C)

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

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32) Photosynthesis generally takes place in which parts of the plant?

(A) Leaf and other chloroplast bearing parts
(B) steam and leaf
(C) Roots and chloroplast bearing parts
(D) Bark and leaf
Correct Answer - Option (A)

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

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34) Plants absorb dissolved nitrates from soil and convert them into

(A) free nitrogen
(B) urea
(C) ammonia
(D) proteins
Correct Answer - Option (A)

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

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35) One of the following is not a function of bones.

(A) Place for muscle attachment
(B) Protection of vital organs
(C) Secretion of hormones for calcium regulation in blood and bones
(D) Production of blood corpuscles
Correct Answer - Option (C)

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

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36) Plants absorb most part of water needed by them through their

(A) embryonic zone
(B) growing point
(C) root hairs
(D) zone of elongation
Correct Answer - Option (C)

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

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37) Photo-oxidation is

(A) photorespiration
(B) photolysis
(C) light and oxygen induced breakdown
(D) All of the above
Correct Answer - Option (D)

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

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39) Plant development is influenced by

(A) quality of light only
(B) quality and quantity of light
(C) quality and duration of light
(D) quality, quantity and duration of light
Correct Answer - Option (D)

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

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