Photosynthesis Assertion and Reason | AIIMS Special MCQs

Photosynthesis Assertion and Reason

These Photosynthesis Assertion and Reason questions consist of two statements each, printed as “Assertion” and “Reason“. While answering these Questions you are required to choose any one of the following responses.
(1) If both A and R are True and the R is a correct explanation of the A.
(2) If both A and R are True but R is not correct explanation of the A
(3) If A is True but the R is False.
(4) If both A and R are false.

Q.1
A : CAM plants may show photorespiration.
R : Dark reaction occurs during day time in CAM plants.
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Q.2
A : The only product of light reaction, required in dark reaction are NADPH₂ and ATP.
R : Dark reaction occurs in night only.
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Q.3
A : All plants are not photosynthetic.
R : Leaves are large in all types of plants.
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Q.4
A : The first product of CO₂ fixation in C₄ plants is OAA.
R : Oxaloacetic acid is formed in agranal chloroplast.
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Q.5
A : Rafflesia is a pitcher plant.
R : Rafflesia grows in nitrogen deficient soil.
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Q.6
A : Daily preodicity of stomata! movement is not character of CAM plants.
R : In CAM plants stomata are closed at night and day.
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Q.7
A : Site of light and Dark reactions are different in C₄-plants.
R : Two type of photosynthetic cells found in C₄-plants.
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Q.8
A : Mangnese is important for Hill reaction.
R : Photolysis of water occurs in the presence of manganese.
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Q.9
A : Oxygen liberates during photosynthesis in cyanobacteria.
R : Cyanobacteria use H₂S as source of electron or hydrogen.
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Q.10
A : Amaranthus and sugarcane are called as Hatch and Slack plants
R : One glucose forms by fixation of 6CO₂ in these plants.
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