Photosynthesis & Plant MCQs with Answers

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Liebig's law of minimum was originally applied on inorganic nutrients.

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Molybdenum is an essential micronutrient required for biological nitrogen fixation as it is a key component of the nitrogenase enzyme.

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The most abundant carbohydrate in nature is cellulose, which is the main structural component of plant cell walls.

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Door swelling in the rainy season occurs due to imbibition, which is the absorption of water by solid colloids (like wood) causing them to swell.

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The plant character present in Euglena is that it has chlorophyll, which enables photosynthesis.

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Red light enhances cell division and promotes growth in plants.

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Abscisic acid is a kind of hormone (a plant hormone also known as the stress hormone of plants).

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Certain algae and bacteria can produce hydrogen gas using sunlight through a process called biophotolysis or photofermentation.

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Photosynthesis is an example of anabolism because it involves the synthesis of complex organic molecules (glucose) from simpler ones (CO₂ and H₂O) using energy.

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The primary purpose of photosystem I in the thylakoid membrane is the reduction of NADP⁺ to NADPH.