Question

keit
ire is
than
s the
from
3. Give reason/explain :
(a) Excretion is a necessary process of our body.
(b) If we donate one kidney to a needy patient it would
not cause any harm to us.
(C) We urinate fewer times in summer than in winter
and the urine passed is generally thicker.
4. What is a uriniferous tubule? How does it function?
5. Why is it necessary to maintain a normal osmotic
concentration of the blood?
6. Explain the terms ultrafiltration and selective
absorption
7. What is dialysis ? Under what condition is it carried
out?​

Answer 1

Answer:

Excretion is a necessary process of our body.

Answer 2

Answer:

7 dialysis is a machine and is used when our both kidneys are damaged

a yes excretion is a necessary process as it removes all toxic substances from our body