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The correct sequence of cell organelles ...

The correct sequence of cell organelles during photorespiration is
(a) Chloroplast, Peroxisome, mitochondria
(b) Chloroplast, vacuole, peroxisome
(c) Chloroplast, Golgibodies, mitochondria
(d) Chloroplast, Rough Endoplasmic reticulum, Dictyosomes

A

Chloroplast, Peroxisome, mitochondria

B

Chloroplast, vacuole, peroxisome

C

Chloroplast, Golgibodies, mitochondria

D

Chloroplast , Rough Endoplasmic reticulum, Dictyosomes

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the correct sequence of cell organelles during photorespiration, we need to understand the process of photorespiration and the roles of the involved organelles. ### Step-by-Step Solution: 1. **Understanding Photorespiration**: - Photorespiration is a process that occurs in plants when the levels of oxygen are high and carbon dioxide levels are low. It is considered a wasteful process because it consumes energy and does not produce glucose efficiently. 2. **Identifying Key Enzyme**: - The enzyme involved in photorespiration is Rubisco (Ribulose-1,5-bisphosphate carboxylase/oxygenase). Under high oxygen conditions, Rubisco acts as an oxygenase, leading to the formation of phosphoglycolate instead of the usual products from carbon fixation. 3. **Sequence of Organelles**: - The process of photorespiration involves three main organelles: - **Chloroplast**: This is where the initial reaction occurs, and oxygen is fixed instead of carbon dioxide. - **Peroxisome**: Here, the phosphoglycolate is converted into other compounds. - **Mitochondria**: Finally, in the mitochondria, carbon dioxide is released as a byproduct of the reactions. 4. **Evaluating the Options**: - (a) Chloroplast, Peroxisome, Mitochondria: This option follows the correct sequence of organelles involved in photorespiration. - (b) Chloroplast, Vacuole, Peroxisome: The vacuole is not involved in photorespiration. - (c) Chloroplast, Golgi bodies, Mitochondria: Golgi bodies do not play a role in photorespiration. - (d) Chloroplast, Rough Endoplasmic Reticulum, Dictyosomes: Neither the rough endoplasmic reticulum nor dictyosomes are involved in this process. 5. **Conclusion**: - The correct answer is (a) Chloroplast, Peroxisome, Mitochondria. ### Final Answer: (a) Chloroplast, Peroxisome, Mitochondria
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