Question

II .Answer the following:-
1. What are the major r constituents of urine?
2. Why are valves present in heart and veins?
3. Differentiate between excretion and egestion.
4. Briefly explain the events occur in Bowman's capsule
5. Why are white blood cells called soldiers of the body​

Answer 1

Answer:

1. The major constituents of urine are Uric acid, Urea , Creatinine.
2. To stop the back flow of deoxygenated blood .
3. Excretion : Passing out faecal matter through rectum . Ejestion : Passing out undigested food .
4. Ultrafiltration, Tubular secretion , Reabsorption.
5. Because they fight against the disease causing germs by processes like phagocytosis .

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