| 1. | Always |
| 2. | Only on land |
| 3. | Only in water |
| 4. | Only during aestivation or hibernation |
| 1. | Oval and nucleate |
| 2. | Circular and nucleate |
| 3. | Oval and enucleate |
| 4. | Biconcave and enucleate |
| 1. | Hepatic portal vein exists between liver and intestine |
| 2. | Hepatic vein exists between both the lobes of liver |
| 3. | Renal portal occurs between the kidney and lower parts of body |
| 4. | All |
| A | B | C | D | E | |
| 1. | Gall bladder | Lung | Ovary | Testis | Rectum |
| 2. | Gall bladder | Lung | Fat bodies | Testis | Rectum |
| 3. | Gall bladder | Lung | Testis | Kidney | Rectum |
| 4. | Gall bladder | Lung | Fat bodies | Kidney | Rectum |