Plant Physiology MCQs with Explanations

Correct Answer: (B) Taking CO2 and releasing oxygen

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Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. In this process, carbon dioxide (CO2) is taken in from the atmosphere and oxygen (O2) is released out during the formation of | glucose (C,H,O)12
Chemical Reaction:
6CO2​+6H2​O+(energy) → C6​H12​O6​+6O2​Carbon dioxide, water, and energy from light produces glucose and oxygen.

Correct Answer: (A) Photolysis of water

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Photolysis of water is the outcome of radiant energy taken by plants in which hydrogen ions and oxygen gas are made by the breaking of H2O molecules.

Correct Answer: (C) Bring about photosynthesis

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In the process of photosynthesis, light energy changes into the chemical energy. Normally plants utilize sunlight but marine algae also use moonlight. Photosynthesis even occurs in electric light.

Correct Answer: (A) Light to chemical energy

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Photosynthesis is the process used by plants to convert light energy into chemical energy. Photosynthesis can be represented by using following chemical equation-
Where, CO2 = Carbon dioxide H2O = Water
C6 H12O6 = Glucose O2 = Oxygen

Correct Answer: (B) 18

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In the process of photosynthesis, 18 molecules of A.T.P., 6 molecules of CO2 and 12 molecules of NADPH are involved in the synthesis of each molecule of Glucose.