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Which statement is wrong about phtorespi...

Which statement is wrong about phtorespiration ?

A

RuBP binds with `O_(2)` to form two moleucle phosphoglycolate

B

Photorespiration occurs in `C_(3)` plants and not `C_(4)` plants

C

There is no synthesis of ATP or NADPH

D

RuBisCO has higher affinity for `CO_(2)` than `O_(2)`

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Photorespiration**: - Photorespiration is a process that occurs in plants where oxygen (O2) is taken in and carbon dioxide (CO2) is released. This typically happens when the enzyme ribulose bisphosphate carboxylase/oxygenase (Rubisco) reacts with O2 instead of CO2. 2. **Analyzing the Statements**: - The question asks to identify the incorrect statement about photorespiration. We need to evaluate each statement provided. 3. **Evaluating the First Statement**: - The first statement claims that RUBP (ribulose bisphosphate) binds with O2 to form two molecules of phosphoglycolate. - However, it is important to note that RUBP reacts with O2 to produce 2-phosphoglycolate and 3-phosphoglycerate. The mention of 3-phosphoglycolate in the statement is incorrect, making this statement wrong. 4. **Evaluating the Second Statement**: - The second statement indicates that photorespiration occurs in C3 plants but not in C4 plants. - This statement is correct as photorespiration is primarily associated with C3 plants due to their reliance on Rubisco, which can bind to O2. 5. **Evaluating the Third Statement**: - The third statement mentions that there is no synthesis of ATP and NADPH during photorespiration. - This is also correct because photorespiration is a degrading process that does not produce energy-rich molecules like ATP or NADPH. 6. **Evaluating the Fourth Statement**: - The fourth statement claims that Rubisco has a higher affinity for CO2 than O2. - This statement is misleading. While Rubisco does have a higher affinity for CO2, it can still bind to O2, especially under conditions where CO2 concentration is low, leading to photorespiration. 7. **Conclusion**: - The incorrect statement about photorespiration is the first one, which inaccurately describes the products formed when RUBP binds with O2. ### Final Answer: The wrong statement about photorespiration is: "RUBP binds with O2 to form two molecules of phosphoglycolate."
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PHYSICS WALLAH-PHOTOSYNTHESIS IN HIGHER PLANTS -NEET PAST 10 YEARS QUESTIONS
  1. Which of the following statements is incorrect ?

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  2. Which of the following is not a product of light reaction of photosynt...

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  3. With reference to factors affecting the rate of photosynthesis, which ...

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  4. Phosphoenol pyruvate (PEP) is the primary CO(2) acceptor in

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  5. Which of the following is a proteinaceous and water soluble photosynth...

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  6. Which statement is wrong about phtorespiration ?

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  7. A process that makes important difference between C(3) and C(4) plants...

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  8. Phytochrome is

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  9. In a chloroplast the highest number of protons are found in

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  10. A plant in your garden avoids photorespiratory losses, has improved wa...

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  11. Water soluble pigments found in plant cell vacuoless are

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  12. Emerson's enhancement effect and red drop have been instrumental in th...

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  13. In photosynthesis, the light-independent reactions take place in

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  14. Anoxygenic photosynthesis is characteristic of

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  15. Read the following four statements (A-D) (A) Both, photophosphorylat...

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  16. Which one of the following organisms is correctly matched with its thr...

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  17. A process that makes important difference between C(3) and C(4) plants...

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  18. The correct sequence of cell organelles during photorespiration is

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  19. In kranz anatomy, the bundle sheath cells have

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  20. CAM helps the plants in

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