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The rate of photosynthesis will become very low if a plant gets light but does not get enough of which substance?

Answer and explanation

Correct answer: Carbon dioxide

Photosynthesis requires light energy, water, carbon dioxide, and chlorophyll. Carbon dioxide supplies the carbon used to build glucose, so it is a direct raw material for the process. If light is available but carbon dioxide is deficient, carbon fixation slows and glucose production decreases sharply. Therefore option B is correct. Nitrogen is important for plant growth but is not the immediate carbon source, oxygen is mainly a product, and urea is a nitrogen fertilizer rather than a photosynthetic raw material.

Related tags

PhotosynthesisCarbon DioxideGlucoseRaw MaterialsLife ProcessesWorld Of LivingScienceClass 10 Mcq

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