- Define excretion.
- Name the basic filtration unit present in the kidney.
- Draw excretory system in human beings and label the following organs of excretory system which perform following functions:
- Form urine.
- Is a long tube which collects urine from kidney.
- Store urine until it is passed out.
CBSE DELHI - OUTSIDE DELHI - FOREIGN SET 1 2018
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- Excretion is the process of removal of harmful and unwanted substances, especially nitrogenous wastes, from the body.
- Nephron is the basic filtration unit of the kidneys.
- Kidneys: Form urine.
- Ureter: Long tube which collects urine from the kidney.
- Urinary bladder: Stores urine until it is passed out.
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