| 1. A | 2. B |
| 3. C | 4. D |
| A | B | |
| 1. | Marasmus | Kwashiorkor |
| 2. | Kwashiorkor | Marasmus |
| 3. | Cretinism | Rickets |
| 4. | Rickets | Cretinism |
| Enzyme | Site of action | Substrate | |
| 1. | Nucleases | Intestine | Nucleic acids |
| 2. | Pepsin | Stomach | Dipeptides |
| 3. | Salivary amylase | Mouth | Starch |
| 4. | Sucrase | Intestine | Sucrose |
| 1. Succus entericus | 2. Enterogastrone |
| 3. Enterokinase | 4. Motilin |
| 1. Only I and II | 2. Only III |
| 3. Only II | 4. I, II and III |
| 1. I, II and III only | 2. I, II and IV only |
| 3. II, III and IV only | 4. I, II, III and IV |