(a) Define excretion.
(b) Name the basic filtration unit present in the kidney.
(c) Draw excretory system in human beings and label the following organs of excretory system which perform following functions:
(i) form urine
(ii) is a long tube which collects urine from kidney
(iii) store urine until it is passed out
Excretion is the process involved in removal of nitrogenous and harmful metabolic waste from the body.
Basic filtration unit present in the kidney is Nephron.
Diagram of Human Excretory System with Labelling of the following parts: