Q11Written answer
Which one of the following is also known as an antidiuretic hormone?
a. Oxytocin
b. Vasopressin
c. Adrenaline
d. Calcitonin
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Worked solution
Option (b) is the answer.
NCERT Exemplar · Class 11 · Biology
Chapter 19: Excretory Products and Their Elimination
Practice each question, then open the answer or worked solution.
MULTIPLE CHOICE QUESTIONS
15 questionsQ12Written answer
Match the terms given in Column I with their physiological processes
given in Column II and choose the correct answer
| Column I
A. Proximal convoluted tubule B. Distal convoluted tubule C. Henle’s loop D. Counter-current mechanism E. Renal corpuscle |
Column II
i. Formation of concentrated urine ii. Filtration of blood iii. Reabsorption of 70-80% of electrolytes iv. Ionic balance v. 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
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Option (b) is the answer.
Q13Written answer
Match the abnormal conditions given in Column A with their explanations
given in Column B and Choose the correct option
| Column A
A. Glycosuria B. Renal calculi C. Glomerular nephritis D. Gout iv. presence of glucose in the urine |
Column B
i. Accumulation of uric acid in joints ii. Inflammation in glomeruli iii. Mass of crystallised salts within the kidney iv. presence of glucose in the 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
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Option (c) is the answer.
Q14Written answer
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. Countercurrent mechanism in Henle’s loop/ Vasa recta
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Option (d) is the answer.
Q15Written answer
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 acidSolution:
Option (c) is the answer.
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