Biology

This chapter discusses nutrition for plants. Living things need food to survive. Plants can prepare their own food, but animals cannot prepare their own food. They obtain food from plants. Thus, animals depend on plants for food.

This chapter discusses nutrition for animals. Animals obtain food from plants, whether directly or indirectly. Nutrient requirement, mode of food intake, and utilisation of food in the body is also discussed.

This chapter discusses about weather and climate. It also explains how various kinds of organisms are adapted to the climate present in their habitat. Our daily activities are planned according to the weather of that day.

This chapter describes about the respiration that occurs in living organisms. Respiration is essential for all organisms. There are two types of respiration: aerobic and anaerobic respiration.

In this chapter, we will study the transportation in plants and animals in detail. We will learn about the circulatory system and excretory system in human beings and animals. The transportation of food and water in plants is also described here.

This chapter describes about the reproduction that occurs in plants. Reproduction is the process of production of new individuals from their parents.

This chapter describes the importance of forests in nature. Forests are known as green lungs and water-purifying systems in nature.