Question

Draw a labelled diagram of human excretory system and explain about it.

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Answer 1

(a) Kidney- Kidneys filter the blood and remove nitrogenous wastes and other toxic substances from the blood and help in urine formation.

(b) Ureter- The ureters are the tubes that carry urine from kidneys to the urinary bladder.

(c) Urinary bladder- It is the reservoir of urine and stores urine until it is excreted out.

Answer 2

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Draw a labelled diagram of human excretory system and explain about it.

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Human excretory system :

• The waste which is present in the blood has to be removed from the body.
• This is done by the blood capillaries in the kidneys.
• When blood reaches the two kidneys, it contains both useful and harmful substances.
• The useful substances are absorbed back into the blood after filteration in kidneys.
• The waste dissolved in water are removed as urine.
• From the kidneys, the urine goes into urinary bladder through tubes called ureters.
• It is stored in the bladder and is passed out through the muscular tube called urethra.
• The kidneys, ureters, urinary bladder and urethra form the excretory system.

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