MCQ Questions for Class 11 Biology Chapter 19 Excretory Products and their Elimination with Answers

Check the below NCERT MCQ Questions for Class 11 Biology Chapter 19 Excretory Products and their Elimination with Answers Pdf free download. MCQ Questions for Class 11 Biology with Answers were prepared based on the latest exam pattern. We have provided Excretory Products and their Elimination Class 11 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 11 Biology Chapter 19 MCQ With Answers

Biology Class 11 Chapter 19 MCQs On Excretory Products and their Elimination

Excretory Products And Their Elimination MCQ Question 1.
Presence of RBCs in urine is
(a) Uremia
(b) ketonuria
(c) Glucosuria
(d) hematuria

Answer

Answer: (d) hematuria
Explanation:
Presence of blood in urine is called hematuria.
Presence of glucose in urine is called glucosuria.
Presence of ketone bodies in urine is called ketonuria.

Excretory Products And Their Elimination Class 11 MCQ Question 2.
Ornithine cycle leads to the formation of
(a) NH3
(b) ((NH2)2)CO)
(c) C5H4N4O3
(d) C5H4N4

Answer

Answer: (b) ((NH2)2)CO)
Explanation:
Ornithine cycle is the other name of urea cycle. Urea cycle is the production of urea from ammonia.
((NH2)2)CO) is the chemical formula of urea.
NH3 is ammonia.
C5H4N4 is purine.
C5H4N4O3 is uric acid.

Class 11 Biology Chapter 19 MCQ Question 3.
The yellow pigment derived from heme breakdown and excreted by kidneys is
(a) Uric acid
(b) Urochrome
(c) Cholesterol
(d) Melanin

Answer

Answer: (b) Urochrome

MCQ On Excretory Products And Their Elimination Question 4.
What happens when glomerular filteration rate falls?
(a) Activation of podocytes
(b) Release of renin
(c) Repression of juxta glomerular cells
(d) None of the above

Answer

Answer: (b) Release of renin
Explanation:
Fall in GFR activates juxta glomerular cells to release renin which stimulates glomerular blood flow and brings back the GFR to normal.

Excretory Products And Their Elimination MCQ With Answers Question 5.
Which of the following can be cured by hemodialysis?
(a) Renal calculi
(b) Glomerulonephritis
(c) Uremia
(d) All of these can be cured by hemodialysis

Answer

Answer: (c) Uremia
Explanation:
Malfunctioning of kidneys can lead to accumulation of urea in blood, this situation leads to uremia.
This can lead to kidney failure. In such patients, urea can be removed by hemodialysis.

MCQ Of Excretory Products And Their Elimination Question 6.
Kidneys are located in
(a) thoracic cavity
(b) abdominal cavity
(c) body cavity
(d) pelvic cavity

Answer

Answer: (b) abdominal cavity
Explanation:
Kidneys are present in abdominal cavity along with digestive organs.
Body cavity contains brain and spinal cord.
Thoracic cavity contains heart and lungs.
Pelvic cavity contains bladder and reproductive organs.

MCQs On Excretory Products And Their Elimination Question 7.
The muscular tubes which take the urine from the kidneys to the bladder are
(a) Urinary bladders
(b) Ureters
(c) Urethras
(d) Nephrons

Answer

Answer: (b) Ureters

Excretory Products And Their Elimination MCQs Question 8.
Most water and salts are reabsorbed in
(a) DCT
(b) Bowman s capsule
(c) PCT
(d) DCT and PCT

Answer

Answer: (c) PCT

Explanation:
Maximum absorption of water and salts occurs in proximal convulated tubule.

Excretion And Osmoregulation Class 11 MCQ Question 9.
Reabsorption of filterate occurs in
(a) renal tubules
(b) glomerular apparatus
(c) medullary pyramid
(d) juxta cells

Answer

Answer: (a) renal tubules
Explanation:
Nearly 99 per cent of the filtrate is absorbed by renal tubules.

Excretory Products And Their Elimination MCQ Questions Question 10.
JG cells release
(a) angiotensin II
(b) aldosterone
(c) renin
(d) ANF

Answer

Answer: (c) renin
Explanation:
A fall in glomerular blood flow activates JG cells to release renin.

Excretory Products And Their Elimination Ncert MCQ Question 11.
pH of human urine is
(a) 7.0
(b) 6.5
(c) 6.0
(d) 7.5

Answer

Answer: (b) 6.5
Explanation:
The average pH of human urine is 6.0.

MCQ On Excretory System Class 11 Question 12.
Average blood filtered by kidneys per minute is
(a) 1000 – 1500 mL
(b) 500 – 600 mL
(c) 200 – 300 mL
(d) 1100 – 1200 mL

Answer

Answer: (d) 1100 – 1200 mL
Explanation:
On an average kidneys filter 1100 – 1200 mL of blood per minute.

Excretory Products And Their Elimination MCQ Pdf Question 13.
Kidneys are located in
(a) thoracic cavity
(b) abdominal cavity
(c) body cavity
(d) pelvic cavity

Answer

Answer: (b) abdominal cavity
Explanation:
Kidneys are present in abdominal cavity along with digestive organs.
Body cavity contains brain and spinal cord.
Thoracic cavity contains heart and lungs.
Pelvic cavity contains bladder and reproductive organs.

Excretory Products And Their Elimination Class 11 Important Questions Question 14.
Which one of the following statements in regard to the excretion by the human kidneys is correct?
(a) Ascending limb of Loop of Henle is impermeable to electrolytes
(b) Descending limb of Loop of Henle is impermeable to water
(c) Distal convoluted tubule is incapable of reabsorbing HCO3
(d) Nearly 99 percent of the glomerular filtrate is reabsorbed by the renal tubules

Answer

Answer: (d) Nearly 99 percent of the glomerular filtrate is reabsorbed by the renal tubules

Excretory System Class 11 MCQ Question 15.
In the kidneys, osmotic pressure controls ______.
(a) Glucose absorption
(b) Sodium absorption
(c) Water absorption
(d) none of these

Answer

Answer: (c) Water absorption

Class 11 Biology Chapter 19 MCQ Questions Question 16.
Presence of __________ in urine indicates diabetes mellitus.
(a) Glucose
(b) Cholesterol
(c) Ketone bodies
(d) Both 1 and 3

Answer

Answer: (d) Both 1 and 3
Explanation:
Presence of ketone bodies and glucose in urine indicates diabetes mellitus.

Question 17.
If a man takes large amount of protein, he is likely to excrete more amount of
(a) Glucose
(b) Urea and uric acid
(c) Water
(d) Salts

Answer

Answer: (b) Urea and uric acid

Question 18.
Nerves, blood vessels and ureter enters into the kidney through
(a) calyces
(b) hilum
(c) capsule
(d) cortex

Answer

Answer: (b) hilum
Explanation:
Nerves, blood vessels and ureter enters into the kidney through hilum.

Question 19.
The principal nitrogenous excretory compound in humans is synthesised
(a) In the liver but eliminated mostly through kidneys
(b) In kidneys but eliminated mostly through liver
(c) In kidneys as well as eliminated by kidneys
(d) In liver and also eliminated by the same through bile

Answer

Answer: (a) In the liver but eliminated mostly through kidneys

Question 20.
The renal medulla consists of cone-shaped tissue masses called _______.
(a) Renal pyramid
(b) Adipose capsule
(c) Renal cortex
(d) Renal pelvis

Answer

Answer: (a) Renal pyramid

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