This chapter explains how animals, including humans, obtain and digest food.

• Different Modes of Feeding – Animals show different feeding habits: herbivores, carnivores, omnivores.

• Steps in Nutrition in Humans:

  • Ingestion – Taking in food

  • Digestion – Breaking down food

  • Absorption – Nutrients enter blood

  • Assimilation – Use of nutrients by body

  • Egestion – Removal of waste

• Human Digestive System:
  Includes mouth, oesophagus, stomach, small intestine, large intestine, rectum, and anus. Each part has a specific function in digestion.

• Role of Enzymes: Enzymes help in breaking down food into simpler substances.

• Animals have different ways of obtaining and digesting food, but all follow basic steps like ingestion, digestion, absorption, and egestion.