On a hot, dry day, a C3 plant closes its stomata to conserve water, causing CO2 levels to drop. Which wasteful process then occurs?
Q1. On a hot, dry day, a C3 plant closes its stomata to conserve water, causing CO2 levels to drop. Which wasteful process then occurs?
Answer: Photorespiration
Explanation: Photorespiration occurs when Rubisco binds oxygen instead of carbon dioxide; this happens primarily in hot, dry conditions when stomata are closed.