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.
Frequently asked questions
What is the correct answer to this question?
Carbon dioxide
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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