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Tongue | Stomach | Villi |
| salivary gland | large intestine | mucous |
| liver | alimentary | cellulose |
| oesophagus | small intestine | digestive juices |
| tooth decay | taste buds | salivary amylase |
| maltose | glucose | egestion |
| holozoic nutrition | ingestion | animal nutrition |
1. is present in grass that cannot be digested by most of the animals, but can be digested by ruminants.
2. The tongue has to recognise the taste of the food.
