Entry Test MCQ :: Homeostasis
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| 21. |
Which of the following is most toxic? |
| A. |
Ammonia. |
B. |
Urea |
| C. |
Uric acid |
D. |
Trimethylamine oxide |
Answer: Option A
Explanation:
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| 22. |
Aquatic animals excrete nitrogenous waste commonly in the form of |
| A. |
Ammonia. |
B. |
Urea |
| C. |
Uric acid |
D. |
Trimethylamine oxide |
Answer: Option A
Explanation:
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| 23. |
Amount of water required to excrete 1gN of Urea is |
Answer: Option B
Explanation:
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| 24. |
Which of the following animal excrete nitrogenous waste mainly as uric acid? |
| A. |
Hydra |
B. |
Planaria. |
| C. |
Humans |
D. |
Birds. |
Answer: Option D
Explanation:
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| 25. |
Hydra has no specialized excretory system because |
| A. |
It does not produce waste material |
B. |
Due to absence of mesoderm |
| C. |
The whole body cells are in contact with water |
D. |
It has pseudocoelom. |
Answer: Option C
Explanation:
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| 26. |
Each ach nephridium of earthworm opens to the exterior by |
| A. |
Nephrostome |
B. |
Nephridiopore |
| C. |
Flame cell |
D. |
Anus |
Answer: Option B
Explanation:
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| 27. |
The nephridia of earthworm open into the coelom by |
| A. |
Nephrostome |
B. |
Nephridiopore |
| C. |
Flame cell |
D. |
Anus |
Answer: Option A
Explanation:
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| 28. |
Which of the following openings have cilia? |
| A. |
Nephrostome |
B. |
Nephridiopore |
| C. |
Both of these |
D. |
None of these |
Answer: Option A
Explanation:
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| 29. |
The distal blind end of the malpighian tubules bathes freely in |
| A. |
Digestive tract |
B. |
Intestines |
| C. |
Haemocoel |
D. |
Coelom |
Answer: Option C
Explanation:
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| 30. |
The main nitrogenous waste formed in the body of earthworm is/are |
| A. |
Ammonia |
B. |
Urea |
| C. |
Uric acid |
D. |
Trimethylamine oxide |
Answer: Option B
Explanation:
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