Significance of Food Chains
Significance of Food Chains - Food chain studies help, a) understanding the feeding relationships and the interaction between organisms in any ecosystem. b) comprehend the energy flow mechanism and matter circulation in ecosystems. c) understand the movement of toxic substances and the pr..
Structure of Cell
Structure of Cell - Cells vary in shape and size. They may be oval, spherical, rectangular, polygonal, spindle shaped, star shaped, rod-shaped or totally irregular like the nerve cell. The diversity in cells is in accordance with the role or function it has to perform as part of the tissu..
Structure of Cell - Cells vary in shape and size. They may be oval, spherical, rectangular, polygonal, spindle shaped, star shaped, rod-shaped or totally irregular like the nerve cell. The diversity in cells is in accordance with the role or function it has to perform as part of the tissu..Lamarckism
It is the name given to the theory proposed by Jean Baptiste Lamarck (1744-1829), the French Zoologist. It is also known as the 'theory of inheritance of acquired characters'. fig. 5.3 - Jean Baptiste Lamarck Lamarck has explained his ideas on organic evolution in the book Philosophi..
It is the name given to the theory proposed by Jean Baptiste Lamarck (1744-1829), the French Zoologist. It is also known as the 'theory of inheritance of acquired characters'. fig. 5.3 - Jean Baptiste Lamarck Lamarck has explained his ideas on organic evolution in the book Philosophi..Forests and Wild Life
Forests and Wild Life - The biotic component of our environment on land, i.e. plants and animals (leaving aside the oceans and other water bodies) are overwhelmingly found in forests. Forests form a buffer for the earth to protect life forms; in fact that's where all our biodiversity and including ..
Biology - The study of Life
Biology - The study of Life - Biology is a branch of science, which deals with the study of life. It is concerned with the study of living organisms, which are immeasurably diverse and complex than the non-living matter. Hence, biology is also described as life science or natura..
Biotechnology
Biotechnology is science of manufacturing useful substances, chemicals, medicines by use of living organisms and their life process. In fact, biotechnology is not a new science. Alcohol was the first product manufactured by ancient biotechnologist. In recent years, biotechnology is growin..
Accumulation of Variation During Reproduction
All round us we see different organisms from the lowest forms to the highest. Species differ from each other. However, the variation we focus relates to the differences among individuals of a species. No two individuals are identical to each other. While we acquire a common body design, ..
All round us we see different organisms from the lowest forms to the highest. Species differ from each other. However, the variation we focus relates to the differences among individuals of a species. No two individuals are identical to each other. While we acquire a common body design, ..Merits and Demerits of Five Kingdom Classification
. The five-kingdom classification gives a clear indication of cellular organization and modes of nutrition, the characters which appeared very early in the evolution of life. However, the five-kingdom classification has certain drawbacks also, particularly with reference to the lower form..
Kingdom Protista
Kingdom Protista - The Kingdom Protista includes with a few exceptions, all the unicellular eukaryotic micro-organisms. They are predominantly aquatic where they occur as solitary cells. Some of them may form colonies consisting of similar cells. The protists are regarded as ancestors of ..
Biology - A Science of Exceptions
Physical, chemical and mathematical sciences follow a specific set of rules and regulations. They are governed by a set of laws such as the law of gravity, the laws of thermodynamics, the law of conservation of mass and so on. However, biological sciences, in the strict sense, do not follow any rul..
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