NEET Zoology Excretory Products and Their Elimination NEET s MCQ Questions - Practice Now

Question 1

The part of nephron involved in active reabsorption of sodium is _______.

Accepted Answer

Proximal convoluted tubule

Answer

Distil convulated tubule

Answer

Bowmans capsule

Answer

Descending limb of Henle's loop

Question 2

The increase in osmolarity from outer to inner medullary interstitium is maintained due to :

i. Close proximity between Henles loop and vasa recta

ii. Counter current mechanism

iii. Selective secretion ofHCO₃^-and hydrogen ions in PCT.

iv. Higher blood pressure in glomerular capillaries

Accepted Answer

i and ii

Answer

iii and iv

Answer

i , ii and iii

Answer

Only ii

Question 3

Which one of the following correctly explains the function of a specific part of a human nephron?

Accepted Answer

Podocytes: create minute spaces (slite pores) for the filtration of blood into the Bowman;s capsule

Answer

Afferent arteriole: carries the blood away from the glomerular towards renal vein.

Answer

Henle's loop: most reabsorption of the major substances from the glomerular filtrate.

Answer

Distal convoluted tubule: reabsorption of K⁺ ions into the surrounding blood capillaries

Question 4

Select the correct statement :

Accepted Answer

Reduction in glomerular filtration rate activates JG cells to release renin

Answer

Angiotensin II is a powerful vasodilator

Answer

Counter current pattern of blood flow is not observed in vasa recta

Answer

Atrial natriuretic factor increases the blood pressure

Question 5

Match the item in column I with those in column II and select the correct option given below:

Column I (Functions)	Column II (Part of the excretory system)
a. Ultrafiltration	1. Henles loop
b, Concentration of urine	2. Ureter
c, Transport of urine	3. Urinary bladder
d, Storage of urine	4. Malpighian corpuscle
	5. Proximal convoluted tubule

Accepted Answer

A−4,B−1,C−2,D−3

Answer

A−5,B−4,C−1,D−2

Answer

A−4,B−5,C−2,D−1

Answer

A−5,B−4,C−1,D−3

Question 6

Which of the following help in prevention of diuresis?

Accepted Answer

Reabsorption of Na⁺and water from renal tubules due to aldosterone

Answer

Atrial natriuretic factor causes vasoconstriction

Answer

Decrease in secretion of renin by JG cells

Answer

More water reabsorption due to undersecretion of ADH

Question 7

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

Accepted Answer

Atrial Natriuretic Factor

Answer

Renin

Answer

Aldosterone

Answer

ADH

Question 8

Figure shows human urinary system with structures labelled A to D. Select option which correctly identifies them and gives their characteristics and/or functions.

Accepted Answer

A- Adrenal gland-located at the anterior part of kidney, which secrete catecholamines which stimulate glycogen breakdown

Answer

B - Pelvis-broad funnel shaped space inner to hilum directly connected to loops of Henle

Answer

C- Medulla-inner zone of kidney and contains complete nephrons

Answer

D- Cortex-outer part of kidney and do not contain any part of nephrons

Question 9

The maximum amount of electrolytes and water (70-80 per cent) from the glomerular filtrate is reabsorbed in which part of the nephron?

Accepted Answer

Proximal convoluted tubule

Answer

Descending limb of loop of Henle

Answer

Ascending limb of loop of Henle

Answer

Distal convoluted tubule

Question 10

Which one of the following options gives the correct categorisation of six animals according to the type of nitrogenous wastes (A, B, C) they give out?

Column I (Functions)	Column II (Part of the excretory system)
a. Ultrafiltration	1. Henles loop
b, Concentration of urine	2. Ureter
c, Transport of urine	3. Urinary bladder
d, Storage of urine	4. Malpighian corpuscle
	5. Proximal convoluted tubule

Accepted Answer

(3)

Answer

(1)

Answer

(2)

Answer

(4)

zoology-neet / excretory-products-and-their-elimination-neet-mcqs

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