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Q. No.Identify the correct statements:
I:
Cartilaginous fishes are ammonotelic.
II:
Mammals are ureotelic.
III:
Land snails are uricotelic.
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: Nitrogenous Excretory Products |
56%
From NCERT
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Consider the given two statements:
| Assertion (A): | It is important that the proximal convoluted tubule of the nephron is lined with simple cuboidal brush bordered epithelium. |
| Reason (R): | Maximum reabsorption from the ultrafiltrate takes place in this segment of the nephron. |
| 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; (R) is False. |
| 4. | Both (R) and (R) are False. |
Subtopic: Nephron Part 1 | Nephron Part 2 |
82%
From NCERT
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Consider the given two statements:
| Assertion (A): | As the filtrate moves down the descending limb of Loop of Henle, it gets concentrated. |
| Reason (R): | The descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes. |
| 1. | Both (A) and (R) are True and (R) correctly explains the (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain the (A). |
| 3. | (A) is True; (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Nephron Part 1 | Nephron Part 2 |
86%
From NCERT
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Identify the correct statements:
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
| I: | The flow of filtrate in the two limbs of Henle’s loop is in opposite directions and thus forms a counter current. |
| II: | The flow of blood through the two limbs of vasa recta is also in a counter current pattern. |
| III: | Although there is proximity between the Henle’s loop and vasa recta, yet they do not form a counter current. |
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: Concentration of Urine |
85%
From NCERT
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ADH:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | facilitates water reabsorption from latter parts of the tubule, thereby preventing diuresis. |
| II: | is a potent vasodilator. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Autoregulation of GFR |
70%
From NCERT
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Consider the given two statements:
| Assertion (A): | Atrial Natriuretic Factor (ANF) mechanism acts as a check on the renin-angiotensin mechanism. |
| Reason (R): | An increase in blood flow to the atria of the heart can cause the release of ANF. |
| 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; (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Autoregulation of GFR |
From NCERT
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Identify the incorrect statement:
| 1. | An adult human excretes, on an average, 1 to 1.5 litres of urine per day. |
| 2. | The urine formed is slightly basic (pH-7.5). |
| 3. | On an average, 25-30 gm of urea is excreted out per day. |
| 4. | Presence of glucose (Glycosuria) and ketone bodies (Ketonuria) in urine are indicative of diabetes mellitus. |
Subtopic: Micturition Reflex |
88%
From NCERT
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What physiological change is brought about by the Renin Angiotensin Aldosterone System in the end?
1. a reduced blood volume
2. an increased blood glucose level
3. a reduced blood pressure
4. an increased blood pressure
1. a reduced blood volume
2. an increased blood glucose level
3. a reduced blood pressure
4. an increased blood pressure
Subtopic: Autoregulation of GFR |
74%
From NCERT
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A combination of flame cell and a tube cell, a protonephridium, is the osmoregulatory and excretory structure in:
| 1. | Platyhelminthes | 2. | Annelids |
| 3. | Aschelminthes | 4. | Echinoderms |
Subtopic: Nitrogenous Excretory Products |
83%
From NCERT
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In humans, urea is produced in the:
1. liver and eliminated by the kidneys
2. kidneys and eliminated by the kidneys
3. liver and eliminated by the intestines
4. intestines and eliminated by the kidneys
1. liver and eliminated by the kidneys
2. kidneys and eliminated by the kidneys
3. liver and eliminated by the intestines
4. intestines and eliminated by the kidneys
Subtopic: Disorders of Excretory System |
90%
From NCERT
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