Question:
Which one of the following is wrong in relation to photorespiration ?
Which one of the following is wrong in relation to photorespiration ?
Updated On: Aug 20, 2024
- It occurs in chloroplast
- It occurs in day time only
- It is a characteristic of $C_{4}$ plants
- It is a characteristic of $C_3$ plants
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The Correct Option is C
Solution and Explanation
Photorespiration is a type of respiration which occurs in green cells in presence of light. It involves three organelles - chloroplast, peroxisomes and mitochondria. Respiratory substrate in photorespiration is a 2-carbon compound glycolic acid (2C), hence called C2 cycle. RuBP-carboxylase in normal O2/CO2 conc, acts as 'carboxylase'. It is the key enzyme of photosynthesis in C3 plants.
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Concepts Used:
Photosynthesis in Higher Plants
Processes Of Photosynthesis in Higher Plants:
Photosynthesis in higher plants involves the following processes:
- Light Reaction
- Dark Reaction
Light Reaction:
- This phenomenon occurs in the presence of light.
- The pigment absorbs light and produces energy in the form of ATP.
- The process involves- absorption of light, water splitting, the release of oxygen, and formation of ATP and NADPH.
Dark Reaction:
This process occurs in the absence of light in the stroma of the chloroplasts. The following cycles are involved in the process:
- Calvin Cycle (C3 Cycle)
- C4 Cycle (Hatch and Slack Pathway)