R Rohan Raj 🎓 Tutor III ⭐ 6.53K Points 📊 Biology Q. Scientist who discovered blood groups was (A) Krebs (B) Pavlov (C) Karl Landsteiner (D) Darwin 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (C) Karl Landsteiner You must be Logged in to update hint/solution 💬 Discussion 💬 Comment