PYQSide ExamsMy practice

Excretory Products and their Elimination · Question 16

NEET (UG) 2019MCQEasy📈 Topic in 50% papers+4−1
1

Which of the following factors is responsible for the formation of concentrated urine?

  1. Secretion of erythropoietin by Juxtaglomerular complex.
  2. Hydrostatic pressure during glomerular filtration.
  3. Low levels of antidiuretic hormone.
  4. Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys.

Answer

(4) Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys.

Solution

As per NCERT, the proximity between Henle's loop and vasa recta and the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium (from 300 mOsmol L-1 in the cortex to about 1200 mOsmol L-1 in the inner medulla).

⇒ This gradient helps easy passage of water from the collecting tubule, concentrating the filtrate.

∵ Low ADH causes dilute urine, erythropoietin acts on RBC formation and glomerular hydrostatic pressure only drives filtration,

∴ hyperosmolarity of the inner medullary interstitium is responsible for concentrated urine.

Answer: (4)

NEET (UG) 2019

Keep practising — Excretory Products and their Elimination

2

Use of an artificial kidney during hemodialysis may result in : Which of the following options is the most appropriate?

  1. C and D only
  2. A and D only
  3. A and B only
  4. B and C only
NEET (UG) 2019
3

Match the items given in column I with those in column II and select the correct option given below.

  1. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  2. (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
  3. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
  4. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
NEET 2018
4

Match the items given in column I with those in column II and select the correct option given below.

  1. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  2. (a)-(iv), (b)-(v), (c)-(ii), (d)-(iii)
  3. (a)-(v), (b)-(iv), (c)-(i), (d)-(iii)
  4. (a)-(v), (b)-(iv), (c)-(i), (d)-(ii)
NEET 2018
5

A decrease in blood pressure/volume will not cause the release of

  1. atrial natriuretic factor
  2. aldosterone
  3. ADH
  4. renin
NEET 2017
6

Which of the following statements is correct?

  1. The descending limb of loop of Henle is impermeable to water
  2. The ascending limb of loop of Henle is permeable to water.
  3. The descending limb of loop of Henle is permeable to electrolytes.
  4. The ascending limb of loop of Henle is impermeable to water.
NEET 2017
7

In mammals, which blood vessel would normally carry largest amount of urea?

  1. Hepatic Vein
  2. Hepatic Portal Vein
  3. Renal Vein
  4. Dorsal Aorta
NEET 2016 (Phase 1)
8

The part of nephron involved in active reabsorption of sodium is

  1. distal convoluted tubule
  2. proximal convoluted tubule
  3. Bowman's capsule
  4. descending limb of Henle's loop
NEET 2016 (Phase 2)
9

Human urine is usually acidic because

  1. potassium and sodium exchange generates acidity
  2. hydrogen ions are actively secreted into the filtrate
  3. the sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries.
  4. excreted plasma proteins are acidic
AIPMT 2015
10

The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of -

  1. Urea
  2. Potassium urate
  3. Calcium carbonate
  4. Ammonia
AIPMT 2015
11

Which of the following does not favour the formation of large quantities of dilute urine?

  1. Renin
  2. Atrial natriuretic factor
  3. Alcohol
  4. Caffeine
AIPMT 2015 (Cancelled)

All Excretory Products and their Elimination PYQs →

PDFDownload Excretory Products and their Elimination PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Zoology chapters
Class 11Animal KingdomStructural Organisation in AnimalsBiomolecules (Biology)Digestion and AbsorptionBreathing and Exchange of GasesBody Fluids and CirculationExcretory Products and their EliminationLocomotion and MovementNeural Control and CoordinationChemical Coordination and Integration
Class 12Human ReproductionReproductive HealthEvolutionHuman Health and DiseaseBiotechnology: Principles and ProcessesBiotechnology and its ApplicationsBiology Experimental Skills