Pulse rate is equal to the number of heart beats per minute.
Question
What is the relationship between the rate of heartbeat and pulse rate?
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While learning to ride a bicycle Boojho lost his balance and fell. He got bruises on his knees and it started bleeding. However, the bleeding stopped after some time. a. Why did the bleeding stop? b. What would be the colour of the wounded area and why? c. Which type of blood cells are responsible for clotting of blood?
Open Answer »Read the following terms given below.
| root hairs | Xylem | Urethra |
| arteries | Kidneys | Veins |
| atria | Capillaries | Heart |
| ureter | Phloem | Urinary bladder |