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Q. No.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 |
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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 |
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Consider the given two statements:
| Assertion (A): | Juxtamedullary nephrons are crucial for the process of urine concentration. |
| Reason (R): | They have longer loops of Henle, which extend deep into the medulla, allowing more effective water reabsorption. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Nephron Part 1 | Nephron Part 2 |
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Match the following excretory organs with the correct animal:
Codes:
| Column I | Column II | ||
| A | Kidneys | P | Humans |
| B | Malpighian tubules | Q | Birds |
| C | Green glands | R | Crabs |
| D | Cloaca | S | Insects |
| A | B | C | D | |
| 1. | P | R | S | Q |
| 2. | R | P | Q | S |
| 3. | P | S | R | Q |
| 4. | S | P | Q | R |
Subtopic: Nitrogenous Excretory Products |
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Cortical nephrons differ from juxtamedullary nephrons in that:
| 1. | Cortical nephrons are primarily involved in the filtration of blood. |
| 2. | Juxtamedullary nephrons have a longer loop of Henle that extends deep into the medulla. |
| 3. | Cortical nephrons are absent in mammals. |
| 4. | Juxtamedullary nephrons are not involved in the concentration of urine. |
Subtopic: Nephron Part 1 |
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The role of other organs in excretion includes the skin, which:
1. Excretes excess water and salts.
2. Produces bile to aid in digestion.
3. Filters blood to remove urea.
4. Secretes hormones to regulate blood pressure.
1. Excretes excess water and salts.
2. Produces bile to aid in digestion.
3. Filters blood to remove urea.
4. Secretes hormones to regulate blood pressure.
Subtopic: Role of other Organs in Excretion |
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In majority of the nephrons in the human kidney,
1. Only A is correct.
2. Only B is correct.
3. Both A and B are correct.
4. Both A and B are incorrect.
| A: | The loop of Henle is short and extends only very little into the medulla. |
| B: | Vasa recta is absent or highly reduced. |
2. Only B is correct.
3. Both A and B are correct.
4. Both A and B are incorrect.
Subtopic: Nephron Part 1 |
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How does Atrial Natriuretic Factor (ANF) oppose the Renin-Angiotensin-Aldosterone System (RAAS)?
| 1. | ANF increases blood pressure and blood volume. |
| 2. | ANF causes vasodilation leading to decrease in blood pressure. |
| 3. | ANF increases the reabsorption of sodium in the distal convoluted tubule. |
| 4. | ANF promotes the secretion of renin from the kidneys. |
Subtopic: Osmoregulation |
86%
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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 |
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Which nitrogenous waste has the highest solubility in water?
| 1. | Urea | 2. | Uric acid |
| 3. | Ammonia | 4. | Creatinine |
Subtopic: Nitrogenous Excretory Products |
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