The average pH of human urine is approximately:
1. 8
2. 7
3. 6
4. 7.5

Subtopic:  Micturition Reflex |
 79%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Consider the given two statements:
A: Glomerulus is a tuft of capillaries formed by the afferent arteriole.
B: Vasa recta is absent or highly reduced in cortical nephrons.
1. Only A is correct.
2. Only B is correct.
3. Both A and B are correct. 
4. Both A and B are incorrect.
Subtopic:  Nephron Part 1 |
 86%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Where, within the loop of Henle, do you expect that the fluid will be most concentrated?
1. In the ascending limb
2. In the descending limb
3. At the hairpin bend
4. Just when it is joining the distal convoluted tubule
Subtopic:  Nephron Part 1 | Nephron Part 2 | Concentration of Urine |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

Consider the given two statements:
Assertion (A): Juxtamedullary nephrons play very important role in concentration of urine.
Reason (R): Juxtamedullary nephrons constitute about 85% of all nephrons in human kidneys.
 
1. Both (A) and (R) are True and (R) correctly explains (A)
2. Both (A) and (R) are True but (R) does not correctly explain (A)
3. (A) is True but (R) is False
4. (A) is False but (R) is True
Subtopic:  Human Kidney: Location & Cut Section | Nephron Part 1 | Nephron Part 2 |
 75%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Which of the following are vasoconstrictors? 
A: Antidiuretic hormone 
B: Angiotensin II 
C: Atrial natriuretic factor 
1. Only A and B 
2. Only B
3. Only A and C 
4. A, B and C 

Subtopic:  Osmoregulation |
 77%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

In majority of the nephrons in the human kidney,
A: The loop of Henle is short and extends only very little into the medulla.
B: Vasa recta is absent or highly reduced.
1. Only A is correct.
2. Only B is correct.
3. Both A and B are correct.
4. Both A and B are incorrect.
Subtopic:  Nephron Part 1 |
 92%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

Identify the incorrect statement:
1. Lungs remove large amount of carbon dioxide.
2. Sweat contains sodium chloride, small amount of urea and lactic acid.
3. Sebaceous glands eliminate sterols, hydrocarbons, and waxes.
4. Saliva does not eliminate any nitrogenous waste
Subtopic:  Role of other Organs in Excretion |
 92%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Consider the given two statements:
Assertion (A):  Ammonia is considered to be a less toxic excretory product compared to urea and uric acid.
Reason (R): Ammonia requires a large amount of water for its elimination due to its high solubility and toxic nature.
 
1. Both (A) and (R) are True and (R) correctly explains (A).
2. Both (A) and (R) are True and (R) does not correctly explain (A).
3. (A) is True, (R) is False.
4. (A) is False, (R) is True.
Subtopic:  Nitrogenous Excretory Products |
 90%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Consider the given two statements:
Statement I: An increase in blood flow to the atria of the heart can cause the release of Atrial Natriuretic Factor (ANF).
Statement II: A fall in glomerular blood flow/glomerular blood pressure/GFR can activate the JG cells to release renin.
 
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
Subtopic:  Autoregulation of GFR |
 90%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

How many of the given statements are correct?
I: Protonephridia are primarily concerned with ionic and fluid volume regulation, i.e., osmoregulation.
II: Nephridia are the tubular excretory structures of earthworms and other annelids.
III: Malpighian tubules are the excretory structures of most of the insects including cockroaches.
IV: Antennal glands or green glands perform the excretory function in crustaceans like prawns.
1. 1
2. 2
3. 3
4. 4
Subtopic:  Nitrogenous Excretory Products |
 87%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.