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Homeostasis
Class 10 · Biology · 9 questions
Name: ____________________ Date: ____________
Maintaining a stable internal environment is called:
- A Excretion only
- B Growth
- C Digestion
- D Homeostasis
The main excretory organ in humans is the:
- A Kidney
- B Heart
- C Liver
- D Pancreas
The functional unit of the kidney is the:
- A Nephron
- B Neuron
- C Alveolus
- D Villus
Urea is formed in the:
- A Kidney
- B Stomach
- C Lungs
- D Liver
Sweating helps to:
- A Digest food
- B Cool the body
- C Warm the body
- D Make urea
The liquid waste of the body formed by kidneys is:
- A Saliva
- B Urine
- C Sweat
- D Bile
Dialysis is used for people whose:
- A Heart is slow
- B Lungs have failed
- C Kidneys have failed
- D Liver is enlarged
The skin helps to control body temperature by:
- A Making blood
- B Sweating
- C Digesting
- D Growing
The tube that carries urine from the kidney to the bladder is the:
- A Aorta
- B Nephron
- C Ureter
- D Urethra
Answer key
1. D, 2. A, 3. A, 4. D, 5. B, 6. B, 7. C, 8. B, 9. C
This is the meaning of homeostasis.
Kidneys remove urea and excess water from the blood.
Each kidney has about a million nephrons.
The liver makes urea from excess amino acids and the kidneys remove it.
Evaporation of sweat removes heat from the body.
Urine contains urea and excess water.
A dialysis machine filters the blood.
Sweat evaporates and cools the body.
The ureter links the kidney to the bladder.