.png "Can You Answer These Excretion MCQs? (NCERT Class 10 CBSE)")
1. The biological process of removing harmful metabolic nitrogenous wastes from the body is called:
a) Respiration
b) Photosynthesis
c) Excretion
d) Transpiration
2. In human beings, the excretory system includes:
a) A pair of lungs, a heart, and blood vessels
b) A pair of kidneys, a pair of ureters, a urinary bladder, and a urethra
c) A liver, a pancreas, and intestines
d) Skin, hair, and nails
3. The basic filtration unit in the kidneys is called:
a) Alveoli
b) Nephrons
c) Villi
d) Tracheids
4. The cup-shaped end of a nephron that collects the filtrate is called:
a) Glomerulus
b) Loop of Henle
c) Bowman’s capsule
d) Proximal tubule
5. Which of the following is not reabsorbed in the kidneys?
a) Glucose
b) Amino acids
c) Urea
d) Salts
6. Assertion (A): The urine forming in each kidney enters a long tube called the ureter.
Reason (R): Ureter connects the kidneys with the urinary bladder.
a) Both A and R are true, and R is the correct explanation of A.
b) Both A and R are true, but R is not the correct explanation of A.
c) A is true, but R is false.
d) A is false, but R is true.
7. Assertion (A): Urine is stored in the urinary bladder until it is released.
Reason (R): The urinary bladder is under nervous control, allowing us to control urination.
a) Both A and R are true, and R is the correct explanation of A.
b) Both A and R are true, but R is not the correct explanation of A.
c) A is true, but R is false.
d) A is false, but R is true.
8. Fill in the blank: An artificial kidney is a device used to remove ________ waste products from the blood through dialysis.
a) Oxygen
b) Nitrogenous
c) Carbon dioxide
d) Glucose
9. The fluid used in an artificial kidney has the same osmotic pressure as blood but lacks:
a) Water
b) Oxygen
c) Nitrogenous wastes
d) Glucose
10. In plants, the loss of excess water through aerial parts is known as:
a) Excretion
b) Transpiration
c) Translocation
d) Respiration
11. Match the following excretory products with the organisms:
|
A. Urea |
1. Birds |
|
B. Uric acid |
2. Fish |
|
C. Ammonia |
3. Mammals |
a) A-3, B-1, C-2
b) A-2, B-3, C-1
c) A-1, B-2, C-3
d) A-3, B-2, C-1
12. The kidneys in human beings are a part of the system for
a) Nutrition
b) Excretion
c) Respiration
d) Transportation
13. Fill in the blank: The cluster of thin-walled blood capillaries in the nephron is called the
________.
a) Bowman’s capsule
b) Loop of Henle
c) Glomerulus
d) Proximal tubule
14. Which waste products are commonly stored in plant tissues such as old xylem?
a) Oxygen and carbon dioxide
b) Resins and gums
c) Glucose and starch
d) Proteins and lipids
15. Assertion (A): Plants excrete waste substances into the soil around them.
Reason (R): Plants have specialized excretory organs like kidneys and liver.
a) Both A and R are true, and R is the correct explanation of A.
b) Both A and R are true, but R is not the correct explanation of A.
c) A is true, but R is false.
d) A is false, but R is true.
16. In case of kidney failure, what device is used to remove waste products from the blood?
a) Respirator
b) Pacemaker
c) Artificial heart
d) Dialysis machine
17. Fill in the blank: The amount of water reabsorbed in the kidneys depends on the amount of ________ to be excreted.
a) Salts
b) Glucose
c) Dissolved waste
d) Proteins
18. The structure that connects the kidney to the urinary bladder is:
a) Urethra
b) Ureter
c) Nephron
d) Bowman’s capsule
19. In humans, the urge to urinate is controlled by:
a) Muscular system
b) Nervous system
c) Digestive system
d) Endocrine system
20. Fill in the blank: Waste products from the blood pass into the dialysing fluid by ________ during hemodialysis.
a) Osmosis
b) Active transport
c) Diffusion
d) Filtration
Answers:
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