Answer: Blood clotting.
- A Carrying oxygen
- B Immunity
- C Blood clotting
- D Digestion
Correct answer: C. Blood clotting
Explanation: Platelets (thrombocytes) are involved in blood clotting. They aggregate at wound sites and release clotting factors.
A single ECG cycle: the P wave marks atrial depolarisation (contraction signal), the large QRS complex marks ventricular depolarisation, and the T wave marks ventricular repolarisation (recovery) before the next cycle begins.
Concept context
Blood, lymph, the heart, the cardiac cycle, blood pressure, and ECG. High NEET weightage.