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InterviewSolution
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A) What is pheophytin? B) What is the significance of `C_(4)` cycle? |
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Answer» A. Pheophytin is a modified chlrophyll a molecule in which two H atoms have replaced the central `Mg^(2+)`. It accepts the electrons from `P_(680)` and passes them to a special molecule of quinone. B) `C_(4)` cycle is of great adaptive advantage to the tropical plants which can continue even under much low `CO_(2)` concentration when `C_(3)` plants stop photosynthesis. The `C_(4)` cycle is more efficient than the `C_(3)` cycle due to absence of photorespiration in `C_(4)` plants. |
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