NCERT Class 11-Biology: Chapter – 19 Excretory Products and Their Elimination Part 2 (For CBSE, ICSE, IAS, NET, NRA 2022)

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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
Column IColumn II
A.Proximal convoluted tubulei.Formation of concentrated urine
B.Distal convoluted tubuleii.Filtration of blood
C.Henle՚s loopiii.Reabsorption of of electrolytes
D.Counter-current mechanismiv.Ionic balance
E.Renal corpusclev.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
Column AColumn B
A.Glycosureai.Accumulation of uric acid in joints
B.Renal calculiii.Inflammation in glomeruli
C.Glomerular nephritisiii.Mass of crystallised salts within the kidney
D.Goutiv.Presence of glucose in urine

Options:

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)