A. Water absorption
B. Gas exchange (CO₂ intake, O₂ release)
C. Food storage
D. Defense against pests
Explanation: Stomata are small openings on the leaf surface that facilitate the exchange of gases, allowing plants to take in carbon dioxide for photosynthesis and release oxygen.
The correct answer to the question: "Main function of stomata:" is "Gas exchange (CO₂ intake, O₂ release)".
