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Carbohydrates are compounds of carbon, hydrogen and oxygen. According to their chemical structure they may be simple or complex. Sugar and starch are complex where as glucose is simpl..

There are mainly two types of food chains operating in nature. a) Grazing food chain b) Detritus food chain. Grazing food chain is generally seen in ecosystems such as grassland, pond or lake where a substantial part of the net primary production is grazed on..

All living organisms need food for their existence. They need food for their growth, repair of tissues, energy and also protection against diseases. The various components of food are proteins, carbohydrates, fats, vitamins, minerals, roughage and wate..

Introduction - Man is an omnivore. He depends on both plants and animals for food. In the previous chapter we studied about crops being the major source of our food. In this chapter, let us study about animal sources of food. Animal sources include eggs, meat, milk and..

Types of Food Chains - There are mainly two types of food chains operating in nature. a) Grazing food chain b) Detritus food chain. Grazing food chain is generally seen in ecosystems such as grassland, pond or lake where a substantial part of the ne..

Introduction - Man is an omnivore. He depends on both plants and animals for food. We know that crops are a major source of food..

Importance of Chemicals in Food - Actually speaking, natural food substances are various forms of chemicals. For e.g., rice is a carbohydrate. Fruits contain carbohydrates and acids like citric acid. Vegetables contain proteins (amino acid blocks) and vitamins. Besides these, ch..

The study of food chains helps in understanding food relationship and interdependence among various organisms in an ecosystem. The mechanism of transfer of food, energy and nutrients through various components of nature can also be studied The effect of the use..

The different steps or levels in a food chain form different trophic levels. The illustration below is self-explanatory. This is the ecosystem that can exist on land. Trophic levels Thus a food chain of four levels is built up where green plants fix up the solar energy and prepa..

Introduction - All living organisms need food for growth, work, repair and maintaining life processes. Food is made up of several components such as proteins, carbohydrates, fats, minerals and vitamin..