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VR Tour For Std. 7 Ch. 2: Nutrition in Animals

What's Included in Virtual tour of this chapter

Food is very important for the sustenance of life. The digestive tract in humans starts from the mouth and ends at the anus. The human digestive system consists of the alimentary canal and secretory glands. It consists of the (i) buccal cavity, (ii) esophagus, (iii) stomach, (iv) small intestine, (v) large intestine, and (vi) anus. Nutrition is a complex process involving: (i) ingestion, (ii) digestion,(iii) absorption, (iv) assimilation and (v) egestion. The animal digestive system is different than the human digestive system and the bacteria living in the rumen of cattle can digest cellulose. We will also learn about the digestive system of the Amoeba.

Virtual tour 1 Human Digestive system

Virtual tour 1: Human Digestive system

The food gets digested gradually as it passes through the various parts of the alimentary tract. Digestion is the process of breaking down complex food materials into smaller simpler particles. The food we eat every day contains a mixture of nutrients like carbohydrates, proteins, fats, vitamins, and minerals.

Virtual tour 2 Cow Digestive system

Virtual tour 2: Cow Digestive system

We will learn about the digestive system in herbivores. We will take the example of a cow to understand this process. When a cow eats the grass, the grass enters the buccal cavity. Then after some time, a small food part (cud) comes back to mouth from the rumen, and the cow chews. Then chewed food goes to the stomach. From the stomach, the food goes to the small intestine and the large intestine. The waste is then expelled out from the body.

Virtual tour 3 Nutrition in Amoeba

Virtual tour 3: Nutrition in Amoeba

Amoeba is a single-celled organism typically found in freshwater habitats like ponds. It belongs to the group of protozoa. Amoeba engulfs food particles with the help of pseudopodia then digestion takes place in food vacuoles and finally, it expels out waste material.