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Homeostasis

Class 10 · Biology · 5 questions

Name: ____________________   Date: ____________

  1. Maintaining a stable internal environment is called:

    • A Excretion only
    • B Growth
    • C Digestion
    • D Homeostasis

  2. The main excretory organ in humans is the:

    • A Kidney
    • B Heart
    • C Liver
    • D Pancreas

  3. The functional unit of the kidney is the:

    • A Nephron
    • B Neuron
    • C Alveolus
    • D Villus

  4. Urea is formed in the:

    • A Kidney
    • B Stomach
    • C Lungs
    • D Liver

  5. Sweating helps to:

    • A Digest food
    • B Cool the body
    • C Warm the body
    • D Make urea

Answer key

1. D, 2. A, 3. A, 4. D, 5. B

  1. This is the meaning of homeostasis.

  2. Kidneys remove urea and excess water from the blood.

  3. Each kidney has about a million nephrons.

  4. The liver makes urea from excess amino acids and the kidneys remove it.

  5. Evaporation of sweat removes heat from the body.