This chapter explains topics such as Preparation of Food by Green Plants, Heterotrophic Plant, etc.
This chapter explains topics such as Need of Nutrition, Methods of Food Ingestion, Digestion in Humans, Digestion in Grass Eating Animals, etc.
This chapter explains topics such as Respiration, Rate of Respiration, Necessity of Respiration, Respiratory System of Human, etc.
This chapter explains topics such as Circulatory System in Human Beings, Transportation in Plants, etc.
This chapter explains topics such as Necessity of Excretion, Excretory System of Human Beings, Excretory Organs in Other Animals, Excretion in Plants, etc.
This chapter explains topics such as Methods of Reproduction, Germination of Pollen and Fertilisation, Pollination, etc.
This chapter explains topics such as Effect of Plants and Animals on Human Life, Beneficial Plans, Beneficial Animals, etc.
This chapter explains topics such as Need of Food, Needs for Food Preservatives, Spoilage of Food, Methods of Food Preservation, etc.
