Which gas is released as a byproduct of photosynthesis? 👤 By The Quiz Wire Editorial Team 🌐 Source Biology Knowledge Base ✅ Fact Checked 📊 Difficulty Easy 📅 Last Updated 01 Dec 2025 A. CO2 B. Oxygen C. Methane D. Nitrogen Check Answer 💡 Explanation: Plants release Oxygen into the atmosphere as a byproduct of photosynthesis. 📚 Topics: Biology Science 🎯 Exams: CSS GEN NTS PMS