PHOTOSYNTHESIS (I) biology MCQ’s questions answers

 

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PHOTOSYNTHESIS (I)

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Question 1
Which statement is correct?
A
The relative levels of O2 and CO2 determine the occurrence of photorespiration.
B
Increased CO2 level increases the photorespiration.
C
Photorespiration occurs in C4 plants.
D
Increased O2 level decreases the photorespiration.
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Question 2
Which of the following element is needed for chlorophyll biosynthesis?
A
Copper
B
Magnesium
C
Calcium
D
Chlorine
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Question 3
When CO2 is limited in the atmosphere:
(i) C3 plants are more beneficial than C4 plants.
(ii) C4 pathway is more efficient for synthesising glucose.
(iii) C3 plants enter into C3 cycle only through C2 cycle.
(iv) Decrease in the rate of photosynthesis in C3 plants.
A
Only (i) is true.
B
Only (iv) is true.
C
Both (iii) and (iv) are true.
D
(ii), (iii) and (iv) are true.
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Question 4
Quantum yield and quantum requirement are:
A
0.125, 4 photons.
B
0.125, 8 photons.
C
4 photons, 0.125.
D
8 photons, 0.125.
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Question 5
Calvin cycle utilize for fixation of 3 molecules of CO2
A
9 ATP and 6 NADPH2
B
8 ATP and 8 NADPH2
C
9 ATP and 3 NADPH2
D
6 ATP and 6 NADPH2
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There are 5 questions to complete.

 

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