Circulatory & Excretory System MCQ Quiz – Part 4
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This Circulatory & Excretory System MCQ Quiz helps aspirants revise important concepts related to the structure and functions of the human circulatory and excretory systems, which are frequently asked in competitive exams. Regular practice of these MCQs improves conceptual understanding and helps candidates answer biology questions quickly and accurately.
GK Series – Biology – Circulatory & Excretory System MCQ Quiz |
|
| Subject | Biology |
| Chapter | Circulatory & Excretory System |
| Part | 4 |
| Questions | 25 |
Who Should Attempt This Circulatory & Excretory System MCQ Quiz?
This Circulatory & Excretory System MCQ Quiz helps aspirants revise important concepts related to the structure and functions of the human circulatory and excretory systems, which are frequently asked in competitive exams. Regular practice of these MCQs improves conceptual understanding and helps candidates answer biology questions quickly and accurately.
Topics Covered in This Circulatory & Excretory System MCQ Quiz
This quiz includes MCQs based on important topics such as heart, blood, blood vessels, circulation of blood, components of blood, kidneys, nephrons, urine formation, and functions of the excretory system, along with other fundamental concepts related to human circulation and excretion.
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Question 1 of 25
1. Question
The kidneys are located in the
Correct
➤ Kidneys are located in the abdominal cavity.
➤ They lie on either side of the vertebral column.Incorrect
➤ Kidneys are located in the abdominal cavity.
➤ They lie on either side of the vertebral column. -
Question 2 of 25
2. Question
In humans, the right kidney is slightly
Correct
➤ Right kidney is slightly lower than the left kidney.
➤ This is due to the presence of the liver above it.Incorrect
➤ Right kidney is slightly lower than the left kidney.
➤ This is due to the presence of the liver above it. -
Question 3 of 25
3. Question
Each kidney contains approximately how many nephrons?
Correct
➤ Each kidney contains about 1 million nephrons.
➤ Nephrons are the functional units of the kidney.Incorrect
➤ Each kidney contains about 1 million nephrons.
➤ Nephrons are the functional units of the kidney. -
Question 4 of 25
4. Question
The functional unit of kidney is
Correct
➤ Nephron is the functional unit of kidney.
➤ It performs filtration and urine formation.Incorrect
➤ Nephron is the functional unit of kidney.
➤ It performs filtration and urine formation. -
Question 5 of 25
5. Question
The first step in urine formation is
Correct
➤ Ultrafiltration is the first step of urine formation.
➤ It occurs in the glomerulus.Incorrect
➤ Ultrafiltration is the first step of urine formation.
➤ It occurs in the glomerulus. -
Question 6 of 25
6. Question
The part of nephron where most reabsorption occurs is
Correct
➤ PCT is the main site of reabsorption.
➤ It reabsorbs glucose, amino acids and water.Incorrect
➤ PCT is the main site of reabsorption.
➤ It reabsorbs glucose, amino acids and water. -
Question 7 of 25
7. Question
The process of selective reabsorption in nephron helps to
Correct
➤ Reabsorption returns useful substances like glucose and water to blood.
➤ It prevents loss of essential nutrients.Incorrect
➤ Reabsorption returns useful substances like glucose and water to blood.
➤ It prevents loss of essential nutrients. -
Question 8 of 25
8. Question
Tubular secretion in nephron involves
Correct
➤ Tubular secretion adds waste substances into filtrate.
➤ It helps in removal of toxins and excess ions.Incorrect
➤ Tubular secretion adds waste substances into filtrate.
➤ It helps in removal of toxins and excess ions. -
Question 9 of 25
9. Question
Juxtaglomerular apparatus (JGA) helps in
Correct
➤ JGA regulates blood pressure and filtration rate.
➤ It controls renal function.Incorrect
➤ JGA regulates blood pressure and filtration rate.
➤ It controls renal function. -
Question 10 of 25
10. Question
Filtration of blood in nephron mainly occurs in
Correct
➤ Glomerulus is the main site of filtration.
➤ Blood is filtered to form primary urine.Incorrect
➤ Glomerulus is the main site of filtration.
➤ Blood is filtered to form primary urine. -
Question 11 of 25
11. Question
The tube that carries urine from kidney to urinary bladder is called
Correct
➤ Ureter carries urine from kidneys to the urinary bladder.
➤ Humans have two ureters, one from each kidney.Incorrect
➤ Ureter carries urine from kidneys to the urinary bladder.
➤ Humans have two ureters, one from each kidney. -
Question 12 of 25
12. Question
The organ that temporarily stores urine is
Correct
➤ Urinary bladder stores urine temporarily.
➤ It expands as it fills with urine.Incorrect
➤ Urinary bladder stores urine temporarily.
➤ It expands as it fills with urine. -
Question 13 of 25
13. Question
The tube through which urine is expelled from the body is
Correct
➤ Urethra carries urine from bladder to outside the body.
➤ It controls urine excretion.Incorrect
➤ Urethra carries urine from bladder to outside the body.
➤ It controls urine excretion. -
Question 14 of 25
14. Question
The process of expelling urine from the body is called
Correct
➤ Micturition is the process of urination.
➤ It is controlled by sphincter muscles.Incorrect
➤ Micturition is the process of urination.
➤ It is controlled by sphincter muscles. -
Question 15 of 25
15. Question
Human urine is mainly composed of
Correct
➤ Urine contains about 95% water.
➤ The remaining part includes urea and salts.Incorrect
➤ Urine contains about 95% water.
➤ The remaining part includes urea and salts. -
Question 16 of 25
16. Question
The yellow color of urine is due to
Correct
➤ Urochrome pigment gives urine its yellow color.
➤ It is a waste product of hemoglobin breakdown.Incorrect
➤ Urochrome pigment gives urine its yellow color.
➤ It is a waste product of hemoglobin breakdown. -
Question 17 of 25
17. Question
The pH of normal urine is approximately
Correct
➤ Urine is slightly acidic with pH around 4.5–5.5.
➤ This helps in excretion of metabolic waste.Incorrect
➤ Urine is slightly acidic with pH around 4.5–5.5.
➤ This helps in excretion of metabolic waste. -
Question 18 of 25
18. Question
Artificial purification of blood is called
Correct
➤ Dialysis removes waste from blood artificially.
➤ It is used when kidneys fail to function properly.Incorrect
➤ Dialysis removes waste from blood artificially.
➤ It is used when kidneys fail to function properly. -
Question 19 of 25
19. Question
Kidney stones are mainly formed due to accumulation of
Correct
➤ Kidney stones are commonly formed from calcium oxalate crystals.
➤ They cause pain and obstruction in urinary tract.Incorrect
➤ Kidney stones are commonly formed from calcium oxalate crystals.
➤ They cause pain and obstruction in urinary tract. -
Question 20 of 25
20. Question
Kidney stones mainly affect the
Correct
➤ Kidney stones affect the urinary system.
➤ They can block urine flow and cause severe pain.Incorrect
➤ Kidney stones affect the urinary system.
➤ They can block urine flow and cause severe pain. -
Question 21 of 25
21. Question
The outer region of kidney is called
Correct
➤ Cortex is the outer part of the kidney.
➤ It contains glomeruli and Bowman’s capsules.Incorrect
➤ Cortex is the outer part of the kidney.
➤ It contains glomeruli and Bowman’s capsules. -
Question 22 of 25
22. Question
The cup-shaped structure at the beginning of a nephron is called
Correct
➤ Bowman’s capsule is a cup-shaped structure in nephron.
➤ It surrounds the glomerulus and collects filtrate.Incorrect
➤ Bowman’s capsule is a cup-shaped structure in nephron.
➤ It surrounds the glomerulus and collects filtrate. -
Question 23 of 25
23. Question
The network of capillaries present inside Bowman’s capsule is called
Correct
➤ Glomerulus is a network of capillaries inside Bowman’s capsule.
➤ It helps in filtration of blood.Incorrect
➤ Glomerulus is a network of capillaries inside Bowman’s capsule.
➤ It helps in filtration of blood. -
Question 24 of 25
24. Question
The loop-like structure in nephron is called
Correct
➤ Loop of Henle is a U-shaped part of nephron.
➤ It helps in concentration of urine.Incorrect
➤ Loop of Henle is a U-shaped part of nephron.
➤ It helps in concentration of urine. -
Question 25 of 25
25. Question
The final part of nephron that collects urine is
Correct
➤ Collecting duct collects urine from nephrons.
➤ It transports urine to the renal pelvis.Incorrect
➤ Collecting duct collects urine from nephrons.
➤ It transports urine to the renal pelvis.