| 1. | Conus arteriosus, ventricle | 2. | Conus arteriosus, auricle |
| 3. | Sinus venosus, auricle | 4. | Sinus venosus, ventricle |
| 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 |
| 1. | Fore-brain includes paired olfactory lobes, paired cerebral hemispheres and unpaired diencephalon |
| 2. | Mid-brain comprises paired optic lobes and paired crura cerebri |
| 3. | Hind-brain comprises cerebellum and medulla oblongata |
| 4. | There are 10 pairs of nerves arising from brain and spinal cord. |