During a hot, dry afternoon, a C3 plant closes its stomata to conserve water. Which enzymatic activity of Rubisco increases as a result?
Q1. During a hot, dry afternoon, a C3 plant closes its stomata to conserve water. Which enzymatic activity of Rubisco increases as a result?
Answer: Oxygenase
Explanation: Rubisco acts as an oxygenase when CO2 is low, leading to photorespiration. Carboxylase activity is wrong because it happens only when CO2 is abundant.