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Photosynthesis in Higher Plants question

2012 · Q3
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Photosynthesis in Higher Plants question

2012 · Q3

NEETBiologyPhotosynthesis in Higher PlantsMCQ+4 / −1
The correct sequence of cell organelles during photores piration is
  1. A
    chloroplast, Golgi-bodies, mitochondria
  2. B
    chloroplast, rough endoplasmic reticulum, dictyosomes
  3. C
    chloroplast, mitochondria, peroxisome
  4. D
    Chloroplast, vacuole, peroxisome.
View written solutionFree

Correct answer: C

In photorespiration, the correct sequence of cell organelles involved is as follows:

  • Chloroplast: This is where the initial steps of photorespiration begin. Here, the enzyme Rubisco oxygenates RuBP, leading to the production of a 2-carbon compound.
  • Peroxisome: The 2-carbon compound is then transferred to the peroxisome. Here, it is converted into a 3-carbon compound while hydrogen peroxide is produced and subsequently broken down.
  • Mitochondria: Finally, the 3-carbon compound is moved to the mitochondria where it is converted back into a 3-carbon phosphate molecule that can re-enter the Calvin cycle in the chloroplast.

So, the correct option that reflects this sequence is :

Option C : Chloroplast, Peroxisome, Mitochondria.

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