R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Biology Q. It causes clotting of blood (A) Thrombin (B) Pectin (C) Haemoglobin (D) All of the above 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (A) Thrombin You must be Logged in to update hint/solution 💬 Discussion 💬 Comment