| I: | The alimentary canal of cockroaches consists of a foregut, midgut, and hindgut. |
| II: | The foregut includes the crop and gizzard, which are responsible for food storage and mechanical digestion, respectively. |
| III: | The hindgut is involved in absorption and assimilation of nutrients. |
| 1. | Fallopian tubes are lined with brush-bordered epithelium. |
| 2. | Proximal convoluted tubule of the nephron is lined by ciliated epithelium. |
| 3. | Areolar tissue is a dense, regular connective tissue. |
| 4. | Skin has dense irregular connective tissue. |
| 1. | Hind limbs end in four digits, forelimbs in five digits |
| 2. | Hind limbs end in five digits, forelimbs in four digits |
| 3. | Hind limbs are smaller and less muscular than forelimbs |
| 4. | Forelimbs end in five digits, hind limbs in four digits |
| 1. | Mouth → Pharynx → Oesophagus → Stomach → Intestine → Rectum → Cloaca |
| 2. | Mouth → Oesophagus → Pharynx → Stomach → Intestine → Cloaca → Rectum |
| 3. | Mouth → Pharynx → Oesophagus → Intestine → Stomach → Rectum → Cloaca |
| 4. | Mouth → Stomach → Oesophagus → Pharynx → Intestine → Rectum → Cloaca |
| I: | The alimentary canal of frogs is short because they are carnivores and hence the length of the intestine is reduced. |
| II: | The liver secretes bile which is stored in the pancreas. |
| III: | Food is captured by the bilobed tongue in frogs. |