exploring creation with biology 2

), each having a chromosome number of 2n = 18. The new species Raphanobrassica has a chromosome number of 2n=36. fig. 5.20 - Creation of Raphanobrass..

The creation of a life form, by a similar life is called reproduction. Reproduction is the extension of life of a species at a given time. It is a means of perpetuation of the species and also multiplies their number. By this process, the individuals transmit life to the next generation a..

judiciously use the resources that are available in plenty and maintain them without depletion or pollution restrict the use of the already endangered resources and protect them from unsustainable development. to increase awareness about the concept of sustainable development and ensure tha..

The term 'natural resources' refers to all the natural things on our earth. It includes everything, that is naturally available and that is not creatable by any human activity. It specifically excludes the materials created by man. Human being and his anthropological history indicate that natural r..

. The two-kingdom classification has certain demerits, particularly with reference to lower forms of life which show common features with both plants and animals. In 1858 Earnt Haeckel proposed the three-kingdom classification in which apart from Plantae and Animalia, a new kingdom Protis..

The environment in which the man and other organisms live is called the biosphere. The biosphere is made up of different regions that have different types of flora (plants) and fauna (animals). The types of organisms in an area are determined by various factors such as the climate, temperature, ra..

A herbarium represents a collection of plant material from a given locality. The specimen is dried, and pressed between paper and cardboard sheets. The herbaria are then arranged in accordance with any accepted system of classification, for further reference and research. fig. 11.1 - Herbaria The p..

Natural resources characteristically exhibit two features. They are: 1) Physical limitations 2) Limitations of regeneration / production. Natural physical resources like geophysical, hydro-geological, edaphic, atmospheric resources exhibit physical limitations. Such limitations ..

;II Hydro ecological Resources Excessive, unscientific and uneconomic ground water exploitation Exploration of underground water without any regard to its rate of rechange Displacement of human settlement during establishment of hydro-projects Loss of agricultural / forest area in standin..

The plants developing from callus have shown large variations in their characters. Such variations are called somaclonal variations. Such variations occur as a part of mutation or as a part of clonal development. As these variations are not due to heredity, their transmissions to next generations i..