Biology

The period from birth to the natural death of an organism represents its lifespan. Every organism has a specific average lifespan. It means every organism grows and lives for a particular length of time. Lifespan may range from one day to 4000 years. The living organisms do not survive indefinitely on this earth. Every individual … Read more

Something which is’ living’ (not dead) is said to be ‘alive’. In most simple terms, alive’ means ‘having life’. Alive is called ‘jeevit’ or ‘zinda’ in Hindi. We are alive and you are also alive. Those things which are alive are called living things’. All the plants and animals (including human beings) are alive or … Read more

Food is an organic substance. The simplest food is glucose. It is also called simple sugar. A more complex food is starch. Starch is made from glucose. The general name of substances like glucose (sugar) starch. and starch is ‘carbohydrates’. Carbohydrates are the most common foods for getting energy. This is glucose powder. Glucose is … Read more

The nutrition in human beings (or man) takes place through human digestive system. The human digestive system consists of the alimentary canal and its associated glands. The various organs of the human digestive system in sequence are : Mouth, Oesophagus (or Food pipe), Stomach, Small intestine and Large intestine. The glands which are associated with … Read more