ARTICLES

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HARDY WEINBERG PRINCIPLE

Hardy weinberg principle states that the frequencies of alleles and genotype will remain same through the generation as long as there are no evolutionary influences. There are five factors which affect hardy weinberg principle. Read More >>>

ADAPTIVE RADIATION

Adaptive radiation is the diversification of an ancestral group of organisms into a variety of related forms specialized to fit different environment. Darwin's finches and australian marsupial are its example. Read More >>>

EVOLUTION OF MAN

Evolution means changes that occur in population over a time. Modern theory of evolution of man proposes that humans and apes derive from ape like ancestor that lived on earth few million years ago. Read More >>>

ENERGY FLOW IN ECOSYSTEM

Sun is the only source of energy on earth. Energy flow in the ecosystem is unidirectional. Food chain , food web and ecological pyramids are the ways of flow of energy from one trophic level to another trophic level. Read More >>>

LICHENS, VIRUS, VIRIODS

Viruses are non cellular organisms and act as a connecting link between plants and animals. Lichens are symbiotic association between algae and fungi. Viroids are infectious agents that are smaller than virus. Read More >>>

MONERA, PROTISTA, FUNGI, PLANTAE, ANIMALIA

Five kingdom classification was given by R.H. Whittaker. He placed monera, protista, fungi,plantae and fungi in separate groups. Monera includes bacteria, protista includes eukaryotic organisms, fungi includes eukaryotic and heterotrophic organisms, plantae includes eukaryotic and multicellular organisms, animalia includes multicellular eukaryotic heterotrophic organisms. Read More >>>

ANGIOSPERM

Angiosperms are the largest group of plant on this earth. They grow as trees, shrubs , bushes, herbs and small flower plants. Angiosperms are classified in two classes; Monocot and Dicot. Read More >>>

GYMNOSPERM

Gymnosperms are small group of plants which act as connecting link between pteridophytes and angiosperm. Gymnosperms are classified into four classes;Cycadophyta, ginkophyta, gnetophyta, coniferophyta. Read More >>>

ALGAE

Algae are eukaryotic organisms which are not differentiated into roots, stem and leaves. Algae are thalloid organism which are included in kingdom Plantae. Algae are classified into six classes. Read More >>>

ECOLOGICAL SUCCESSION

Ecological succession is gradual and predictable change in species composition of given area.Succession in plants are of two types: xerarch and hydrarch succession. Read More >>>

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