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Q. No.Match each item in Column I with one in Column II and select the correct match from the codes given:
Column I
[Organism]
Column II
[Osmoregulatory and excretory structure]
A
Flatworms, rotifers, Amphioxus
P
Protonephridia
B
Earthworm
Q
Nephridia
C
Insects
R
Malpighian tubule
D
Prawn
S
Green gland or antennal gland
Codes:
A
B
C
D
1.
P
Q
R
S
2.
Q
R
S
P
3.
R
S
P
Q
4.
S
P
Q
R
[Organism]
[Osmoregulatory and excretory structure]
Subtopic: Nitrogenous Excretory Products |
93%
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The osmolarity of interstitial fluid in renal cortex of vertebrates is about _____ mOsm per litre, which can be increased to about _______ mOsm per litre in the inner medulla during concentration of urine by the kidneys.
| 1. | 1200, 300 | 2. | 300, 1200 |
| 3. | 300, 600 | 4. | 600, 300 |
Subtopic: Concentration of Urine |
93%
From NCERT
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During hemodialysis:
| I: | Cellophane tube in a dialysing unit acts as artificial kidney. |
| II: | Heparin is added to the blood before it is passed on to the dialysing unit. |
| III: | The cleared blood is pumped back to the body through a vein after adding anti-heparin to it. |
1. Only I is correct
2. Only I and II are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: CRF & Hemodialysis |
84%
From NCERT
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An excessive loss of body fluid can:
| 1. | activate osmoreceptors, stimulating hypothalamus to release ADH and thereby preventing diuresis |
| 2. | switch off osmoreceptors, suppressing release of ADH promoting diuresis |
| 3. | activate osmoreceptors, stimulating hypothalamus to release ADH and thereby promoting diuresis |
| 4. | switch off osmoreceptors, suppressing release of ADH preventing diuresis |
Subtopic: Autoregulation of GFR |
87%
From NCERT
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The increasing gradient of osmolarity in medullary interstitium, during concentration of urine, is mainly caused by reabsortion of:
| 1. | NaCl from ascending limb of loop of Henle and of urea by collecting duct |
| 2. | NaCl from descending limb of loop of Henle and of urea by collecting duct |
| 3. | NaCl from ascending limb of loop of Henle and of urea by PCT |
| 4. | NaCl from descending limb of loop of Henle and of urea by PCT |
Subtopic: Concentration of Urine: I | Concentration of Urine: II |
82%
From NCERT
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In hemodialysis, the role of artificial kidney is actually played by:
| 1. | Dialysate | 2. | Blood pump |
| 3. | Water system | 4. | Cellulose membrane |
Subtopic: CRF & Hemodialysis |
62%
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The proximal convoluted tubule of the nephron is lined by:
1. simple ciliated cuboidal epithelium
2. simple ciliated columnar epithelium
3. compound cuboidal brush bordered epithelium
4. simple cuboidal brush bordered epithelium
Subtopic: Nephron Part 1 | Nephron Part 2 |
87%
From NCERT
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Identify the incorrectly matched pair [assume normal physiological conditions]:
| 1. | GFR – 125 ml/min |
| 2. | Amount of urea produced – 25 to 30 mg/day |
| 3. | Average urine output – 1 to 1.5 liter/day |
| 4. | Average amount of blood filtered by kidney – 1100 to 1200 ml/min |
Subtopic: Disorders of Excretory System |
69%
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Removal rate of carbon dioxide by lungs is approximately:
| 1. | 125 ml/minute | 2. | 200 ml/minute |
| 3. | 280 ml/minute | 4. | 325 ml/minute |
Subtopic: Role of other Organs in Excretion |
75%
From NCERT
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A capillary network around the renal tubule is formed by:
| 1. Afferent arteriole | 2. Efferent arteriole |
| 3. Vasa recta | 4. Arcuate artery |
Subtopic: Nephron Part 1 | Nephron Part 2 |
57%
From NCERT
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