Biology
Grade-9
Easy
Question
Photorespiration is a wasteful metabolic pathway found in ___________.
- C4 Plants
- C3 Plants
- Green Plants
- Photosynthetic algae
Hint:
Photorespiration wastes energy and steals carbon.
The correct answer is: C3 Plants
- Photorespiration does not occur in C4 plants. This is because they have a mechanism which increases the CO2 concentration at the site of the enzyme.
- Photorespiration happens in C3 plants when the CO2 concentration drops to about 50 ppm. The key enzyme that accomplishes the fixing of carbon is rubisco, and at low concentrations of CO2 it begins to fix oxygen instead.
- So C3 Plants is answer
- Photorespiration does not occur in C4 plants. This is because they have a mechanism which increases the CO2 concentration at the site of the enzyme.
- Photorespiration happens in C3 plants when the CO2 concentration drops to about 50 ppm. The key enzyme that accomplishes the fixing of carbon is rubisco, and at low concentrations of CO2 it begins to fix oxygen instead.
- So C3 Plants is answer
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