what is a summary

Summary - Both living organisms and non-living matter are composed of some basic elements and are bound by the same physical laws. However, living organisms differ from non-living matter in some specific aspects. Living organisms exhibit a kind of organisation from molecular level to the ..

Energy band of a solid is the large number of energy levels confined in a small region of energy range of a given solid, constitute what is known as energy band..

Light is a form of energy which can be reflected either by a plane or spherical mirror. Depending upon the type of mirror used for reflection of light the use of reflecting surface also varies. In the next chapter let us see what happens when light moves from one medium to anothe..

Summary - In lower organisms, there is no transport system as the cells are in touch with the surrounding medium. The transport is by the physical processes like diffusion, osmosis, etc. With the advancement in structure, the organisms have to evolve methods to transport nutrients and was..

Growth is one of the most fundamental characteristics of living organisms. It is accompanied by differentiation. The growth cycle of an annual monocarpic angiosperm begins with the zygote which undergoes a period of dormancy. Later, the dormant embryo develops into a seedling which grows into a veg..

"Night of the scorpion" is a poem that can be understood at two levels at one level, the poet describes how, on a rainy day the narrator's mother is bitten by a scorpion and what are the chain reactions to it. At another level, it depicts the India ethos and cultured richness through..

A locus of points is the set of points, and only those points, that satisfy given conditions. - Every point satisfying the given conditions lies on the locus. - Every point on the locus satisfies the given conditions. - The locus can be a straight line or a curved line (lines). To determine a..

>Weismann proposed the theory of continuity of germplasm, only the changes that affect the germ cells and the germplasm (the collection of genes) will be inherited by successive generations Darwin proposed the theory of natural selection to explain the 'survival of the fittest' to lead to the next ..

. This is because light travels slower in a denser medium than in a rarer medium. On account of refraction of light, a tank of water appears to be shallow as it is less deep than what it actually is. It is found that If i is angle of incidence, r is angle of refraction and m is refractive..

While the nervous system and endocrine system have their own features, they have a common method of communication. Both the systems release chemicals to communicate between cells. Together these two systems carry out a very complex process of maintaining a homeostatic (balanced) internal envi..