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With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct ?A. Light saturation for `CO_(2)` fixation occurs at 10% of full sunlight .B. Increasing atmospheric `CO_(2)` concentration up to 0.05% can enhance `CO_(2)` fixation rateC. `C_(3)` plants respond to higher temperatures with enhanced photosynthesis while `C_(4)` plants have much lower temperature optimum.D. Tomato is a greenhouse crop which can be grown in `CO_(2)` enriched atmosphere for higher yield. |
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Answer» In `C_3` plants photosynthesis is decreased at higher temperature due to increased photorespiration. `C_(4)`plants have higher temperature optimum because of the presence of pyruvate phosphate dikinase enzyme, which is sensitive to low temperature. |
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