Temperature Optimum of C3 vs C4 Plants — NEET Biology
✅ Asked in NEET 2017The dark reactions being enzymatic are temperature controlled. Though the light reactions are also temperature sensitive they are affected to a much lesser extent. The C₄ plants respond to higher temperatures and show higher rate of photosynthesis while C₃ plants have a much lower temperature optimum.
NTA tests whether students understand that C₃ and C₄ plants have different temperature optima for photosynthesis. C₄ plants (like maize, sugarcane) thrive at higher temperatures and show increased photosynthetic rates, while C₃ plants (like wheat, rice) have much lower temperature optima and become less efficient in heat. The common mistake is thinking both plant types respond similarly to temperature changes. Remember: C₄ plants are adapted to hot environments with better photosynthetic efficiency at high temperatures due to their anatomy and PEP carboxylase enzyme, while C₃ plants perform best at moderate temperatures. This distinction is crucial for understanding plant adaptation and ecological distribution.
With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct? (NEET 2017)
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