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Test: Mechanism of Concentration of the Filtrate (NCERT) - NEET MCQ


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5 Questions MCQ Test Biology Class 11 - Test: Mechanism of Concentration of the Filtrate (NCERT)

Test: Mechanism of Concentration of the Filtrate (NCERT) for NEET 2024 is part of Biology Class 11 preparation. The Test: Mechanism of Concentration of the Filtrate (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Mechanism of Concentration of the Filtrate (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Mechanism of Concentration of the Filtrate (NCERT) below.
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Test: Mechanism of Concentration of the Filtrate (NCERT) - Question 1

Which of the following is an incorrect match?

Detailed Solution for Test: Mechanism of Concentration of the Filtrate (NCERT) - Question 1

Bowman's capsule  - It contain tuft of capillaries (i.e., Glomerulus) and filters out the waste from the blood by the process of Glomerulus filtration. DCT - It helps in selectively reabsorb sodium, chlorine, potassium, calcium ions and water. Henle's loop - It helps in concentration of urine. PCT - It helps in the absorption majority of ions like - Na+ and K+.

Test: Mechanism of Concentration of the Filtrate (NCERT) - Question 2

If Henle's loop were absent from mammalian nephron, which of the following is to be expected?

Detailed Solution for Test: Mechanism of Concentration of the Filtrate (NCERT) - Question 2

Henle's  loop is a U-shaed part of nephron a start at the end of proximal convoluted tubule are consists of descending limb and ascending limb. Concave current mechanism in Henle's loop and vasa recta to convertrate the urine. Maintenance of concentration gradient in the medullar interstitial fluid by the concave form the filtrate present in the collecting duct so that the concentratin of the filtrate (urine) is increased. Therefore, if Henle's loop was absent from mammalian nephew urine will be more dilute.

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Test: Mechanism of Concentration of the Filtrate (NCERT) - Question 3

Read the given statements and select the correct option.
Statement 1: The final reabsorption of water from the urine into the blood occurs through the collecting duct of a mammaian nephron resulting in the production of hyperosmotic urine.
Statement 2: The loop of Henle creates a sodium gradient in the interstitial fluid.

Detailed Solution for Test: Mechanism of Concentration of the Filtrate (NCERT) - Question 3

The counter current mechanism in loop of Henle and vasa recta, helps in maintaining an increasing osmolarity of the interstitial fluid i.e. form 300 mOsmoL-1 in the cortex is about 1200 mOsmolL-1 in the inner medulla. This gradient is mainly caused by NaCl and urea. This gradient thus helps in easy reabsorption of water from the filtrate in the collecting duct so as to produce hyperosmotic urine.

Test: Mechanism of Concentration of the Filtrate (NCERT) - Question 4

Read the given statements and select the correct option.
Statement 1 :  When the urine moves through the descending limb, it becomes hypertonic to blood plasma and as it passes through are ascending limb, of Henle's loop it becomes hypotonic to blood plasma.
Statement 2 : The descending limb is permeable to sodium ions, while the ascending limb is impermeable to sodium ions.

Detailed Solution for Test: Mechanism of Concentration of the Filtrate (NCERT) - Question 4

As the urine passes through the descending limb it becomes hypertonic, as descending limb is more permeable to water and less permeable to sodium ions.
The filtrate becomes hypotonic as ascending limb is less permeable to water and more permeable to sodium ions.
The statement 1 is correct but the statement 2 is incorrect.

Test: Mechanism of Concentration of the Filtrate (NCERT) - Question 5

Match Column-I with Column-II and select the correct option from the codes given below. 
Column-I
(A) PCT
(B) DCT
(C) Loop of Henle
(D) Counter-current mechanism
(E) Renal corpuscle
Column-II
(i) Concentrated urine formation
(ii) Filtration of blood
(iii) Reabsorption of 70-80% electrolytes
(iv) Ionic balance 
(v) Maintenance of concentration gradient in medulla

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