principles of classification of living organisms

Need for Classification - More than a million species of living organisms have been discovered and described so far and a large number of them are yet to be discovered. Scientists involved in this task, called taxonomists, estimate that there may be around 30 million s..

More than a million species of living organisms have been discovered and described so far and a large number of them are yet to be discovered. Scientists involved in this task, called taxonomists, estimate that there may be around 30 million species of living ..

Introduction - Every organism whether plant or animal is unique in itself. There is a wide diversity in the flora (plants) and fauna (animals) in the world. The diversity we see today is the result of 3.5 billion years of organic evolution. During the course of this evolution se..

Taxonomy is a regular branch of science that is involved with the purpose of arranging or grouping organisms..

Carbon and hydrogen are detected by heating the organic compound with cupric oxide (CuO) strongly, where carbon is oxidized to carbon dioxide and hydrogen to water. Carbon dioxide is tested by lime water test, whereas water is tested by anhydrous copper sulphate test. Fig:16.14 Detec..

This method is based on the relative solubility of the compounds in organic solvents versus aqueous medium. The organic liquid in which the compound is more soluble is generally called as 'solvent'. The solvent chosen should satisfy the following conditions: The solvent shoul..

Sulphur present in any organic compound is oxidized to sulphuric acid by digesting with fuming nitric acid. Sulphuric acid so formed is then quantitatively precipitated as barium sulphate by the addition of excess barium chloride. The precipitate of barium sulphate is filtered, washed, d..

These elements are estimated by its combustion in an atmosphere of pure oxygen to form carbon dioxide (CO 2 ) and water (H 2 O). ..

The modified form of cell theory is called cell principle. It applies almost completely and universally to living organisms. The cell principle is also called cell doctrine. Following are the statements of cell principle. Life exists only in cells. ..

Organic chemistry is that branch of chemistry which deals with the study of compounds of carbon with hydrogen (hydrocarbons), and their derivatives. Presently about five million organic compounds are know..