Author Archives: Nikhil Rathaur

Every organism in this universe are made of tiny basic structural units called cells. Cells were discovered by Robert Hooke in 1665. Cells are the building blocks of an element that cannot be seen with naked eyes but can be seen under a microscope. Every living-element is made up of numerous tiny cells. There areContinue reading “Chapter 05––>The Fundamental Unit of Life”

Introduction Till now we studied that all the organisms are made of cells. On the basis of cell they are divided into unicellular (single-celled) and/or multicellular (two or more celled). Example-Amoeba (unicellular), in case of amoeba all the functions are carried out by the single cell, whether it is digestion, excretion, respiration, but in caseContinue reading “Chapter 06––>Tissue”

Introduction The condition of body to function physically, socially and mentally well is called its health. A body with good physical and mental condition we call it a healthy body. It is not just a body free from disease or weakness but a state of thorough physical, mental and social well-being.  A particular abnormal conditionContinue reading “Chapter 13––>Why do we fall ill?”

Introduction Any edible substance of plant or animal origin that provides nutritional benefits such as carbohydrates, fats, proteins, vitamins, or minerals to an organism when consumed is called Food. A meal that includes adequate amount of proteins, carbohydrates, fats, vitamins and minerals is called Balanced diet. A balanced diet should contain pulses, fruits, vegetables, milk,Continue reading “Chapter 15––>Improvement of Food Resources”

Introduction The nature is a boon to us. The part of earth in which living and non-living organisms exist is called the biosphere. It contains a huge variety of species living in it that interdepends on each other. The interrelationship of the species and their relationship with the environment to support life is called biologicalContinue reading “Chapter 07––>Diversity in Living Organism”