CBSE Science Class 7
Nutrition in Animals
Nutrition in Animals - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Points To Remember:
- Carbohydrates, proteins, fats, vitamins and minerals are essential components of food, these components are called nutrients
- Humans and animals are dependent directly or indirectly on plants for food
- Nutrition is the mode of taking food by an organism and its utilisation by the body
- Animals and most other organisms are called heterotrophs as they take in ready-made food prepared by the plants
- Animal nutrition includes nutrient requirement, mode of intake of food and its utilisation in the body
- The human digestive system consists of alimentary canal and secretory glands
- The mode of feeding vary in different organisms
- Nutrition process involves ingestion, digestion, absorption, assimilation and egestion
- Digestion of carbohydrate, like starch begins in the buccal cavity and the digestion of protein starts in stomach
- The undigested and unabsorbed residues are expelled out from body through anus
- The grazing animals like cow, buffaloes and deer, quickly ingest, swallow their leafy food and store it in rumen, thus are called ruminants.
