NCERT Class 11-Biology: Chapter –19 Excretory Products and Their Elimination Part 2

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Question 9:

Which one of the following statements is incorrect?

a. The medullary zone of kidney is divided into a few conical masses called medullary pyramids projecting into the calyces.

b. Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis.

c. Glomerulus along with Bowman’s capsule is called the renal corpuscle.

d. Renal corpuscle, proximal convoluted tabule (PCT) and distal convoluted tubule (DCT) of the nephron are situated in the cortical region of kidney.

Answer: (b)

Question 10:

The condition of accumulation of urea in the blood is termed as

a. Renal Calculi

b. Glomerulonephritis

c. Uremia

d. Ketonuria

Answer: (c)

Question 11:

Which one of the following is also known as antidiuretic hormone?

a. Oxytocin

b. Vasopressin

c. Adrenaline

d. Calcitonin

Answer: (b)

Question 12:

Match the terms given in Column I with their physiological processes given in Column II and choose the correct answer

Physiological Processes
Physiological processes

Column I

Column II


Proximal convoluted tubule


Formation of concentrated urine


Distal convoluted tubule


Filtration of blood


Henle’s loop


Reabsorption of of electrolytes


Counter-current mechanism


Ionic balance


Renal corpuscle


Maintenance of concentration gradient in medulla

a. A-iii, B-v, C-iii, D-ii, E-i

b. A-iii, B-iv, C-i, D-v, E-ii

c. A-i, B-iii, C-ii, D-v, E-iv

d. A-iii, B-i, C-iv, D-v, E-ii

Answer: (b)

Question 13:

Match the abnormal conditions given in Column A with their explanations given in Column B and Choose the correct option

Chapter 19 - Question 13 - Table of Choose the Correct Option
Chapter 19 - Question 13 - Table of Choose the Correct Option

Column A

Column B




Accumulation of uric acid in joints


Renal calculi


Inflammation in glomeruli


Glomerular nephritis


Mass of crystallised salts within the kidney




Presence of glucose in urine


a. A-i, B-iii, C-ii, D-iv

b. A-iii, B-ii, C-iv, D-i

c. A-iv, B-iii, C-ii, D-i

d. A-iv, B-ii, C-iii, D-i

Answer: (c)

Question 14:

We can produce a concentrated/ dilute urine. This is facilitated by a special mechanism. Identify the mechanism.

a. Reabsorption from PCT

b. Reabsorption from Collecting Duct

c. Reabsorption/ Secretion in DCT

d. Counter current mechanism in Henle’s loop/ Vasa recta

Answer: (d)

Question 15:

Dialysing unit (artificial kidney) contains a fluid which is almost same as plasma except that it has

a. High glucose

b. High urea

c. No urea

d. High uric acid

Answer: (b)

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