biology course

Any species of wild life likely to disappear from the world sooner or later is called a threatened species. The international union of conservation of nature and natural resources (IUCN) has classified the threatened species of wild life into 3 categories for the purpose of conservation. The class..

There are some structures in the body of organisms, which have no apparent use. Such structures are described as 'vestigial'. Vestigial organs indicate that they must have been present in a form in which they were highly functional in the ancestral forms. The human body is described as 'a living m..

Human settlements in the form of cluster of housing units have always been a source of pollution. Because, human beings generate large quantity of wastes during the course of their daily activitie..

The total recoverable iron ore in the country are about 10,052 million tons of haematite and 3400 million tons of magnetite. They are mainly distributed in Madhya Pradesh, Karnataka, Jharkhand and Orissa. Minor resources are, of course, distributed in Orissa, Bihar, Goa, Maharasthra, And..

These are shared by all nations. Examples: Air and solar energy. Study of natural resources can be treated to have run parallel to course of human development as well as parallel to the course of evolution of science itself. The study of natural resources has been an inseparabl..

The eukaryotic cells show a varied number of chromosomes. It is presumed to be the result of breaking up of a single long chromosome into several short units, in the course of evolution, to accommodate the increase in the amount of genetic information. The eukaryotic chromosomes occ..

Mendel was primarily a monk in a monastery. In addition to his normal duties of preaching in the church, Mendel evinced a keen interest in the maintenance of the garden in the premises of the church. In the course of his routine rounds in the garden, Mendel was keenly observing the ..

Eukaryotic Chromosome - The eukaryotic cells show a varied number of chromosomes. It is presumed to be the result of breaking up of a single long chromosome into several short units, in the course of evolution, to accommodate the increase in the amount of genetic information. The eukaryot..

The atmosphere around earth is a blessing of nature on earth to have permitted the existence of life on it. Earth is endowed with an excellent resource of atmosphere - both to shield it from sun's harsh rays and other ill effects of celestial bodies as well as to provide the basis of life on earth...

Due to unequal temperatures during the cooling process, earth's surface developed large number of vast depressions (where oceans are formed), mountains (due to which rains are intercepted) and valleys (where rain water is collected to flow in the form of rivers, streams). In addition, a part of rai..