Q. No.The following substances are the excretory products in animals. Choose the least toxic form among them.
1. Urea
2. Uric acid
3. Ammonia
4. Carbon dioxide
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Which of the following statement is correct?
| 1. | ADH prevents the conversion of angiotensinogen in blood to angiotensin. |
| 2. | Aldosterone facilitates water reabsorption. |
| 3. | ANF enhances sodium reabsorption. |
| 4. | Renin causes vasodilation. |
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A large quantity of one of the following is removed from our body by lungs.
1. CO2 only
2. H2O only
3. CO2 and H2O
4. ammonia
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Different types of excretory structures and animals are given below. Match them appropriately and mark the correct answer from among those given below
| Excretory Structure/Organ | Animals | ||
| A. | Protonephridia | 1. | Prawn |
| B. | Nephridia | 2. | Cockroach |
| C. | Malpighain tubules | 3. | Earthworm |
| D. | Green gland or antennal gland | 4. | Flatworms |
Codes
| A | B | C | D | |
| 1. | 4 | 3 | 2 | 1 |
| 2. | 2 | 3 | 1 | 2 |
| 3. | 4 | 3 | 1 | 2 |
| 4. | 2 | 3 | 2 | 4 |
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Which one of the following statements is incorrect?
| 1. | Birds and land snails are uricotelic animals |
| 2. | Mammals and frogs are ureotelic animals |
| 3. | Aquatic amphibians and aquatic insects are ammonotelic animals |
| 4. | Birds and reptiles are ureotelic |
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Which of the following pairs is wrong?
1. Uricotelic ......... Birds
2. Ureotelic ......... Insects
3. Ammonotelic ......... Tadpole
4. Ureotelic .......... Elephant
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Which one of the following statement is incorrect?
| 1. | The medullary zone of kidney is divided into a few conical masses called medullary pyramids projecting into the calyces. |
| 2. | Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis. |
| 3. | Glomerulus along with Bowman’s capsule is called the renal corpuscle. |
| 4. | Renal corpuscle, Proximal Convoluted Tubule (PCT) and Distal Convoluted Tubule (DCT) of the nephron are situated in the cortical region of kidney. |
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The condition of accumulation of urea in the blood is termed as
1. renal calculi
2. glomerulonephritis
3. uremia
4. ketonuria
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