Question

Highest rate of photosynthesis is found in

• A. C3 plants
• B. C4 plants
• C. CAM plants
• D. None of these

Hint:

C4 plants show the highest photosynthetic rate due to efficient CO\textsubscript{2} fixation.

Answer 1

The Correct Option is B

C4 plants have a higher rate of photosynthesis compared to C3 and CAM plants due to their specialized mechanism that efficiently fixes CO\textsubscript{2} even under high temperature and light intensity conditions. This adaptation minimizes photorespiration and increases photosynthetic efficiency.
- C3 plants have lower photosynthetic rates under such conditions.
- CAM plants fix CO\textsubscript{2} at night to reduce water loss but generally have slower photosynthesis rates.