In this article we will discuss about historical evolution of the plants that can be traced through the geological periods. (1) Evolution of organisms on the earth’s surface begins from the pre-cambrian period when probably the first life in the form of single celled or unicellular microscopic organisms resembling the present-day cocoid or spheroid bacteria, […]
Historical Evolution of Plants | Biosphere | Geography
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Distribution of Plants: 6 Kingdoms | Biosphere | Geography
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There is a wide range of variations in the distribution of vegetation on the globe. There is a zonal pattern of vegetation from equator towards the poles and from seal level to vegetation level on the high mountains. The distribution of plants is affected and controlled by a variety of factors e.g.: (i) Climatic factors […]
Dispersal of Animals: 6 Types | Biosphere | Geography
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In this article we will discuss about the six main types of dispersal of animals. (1) Gradual Dispersal: Gradual dispersal is secular in nature because it involves longer period of time and very slow rate of migration but such dispersal covers larger areas and results in wide-spread distribution of animals over time. (2) Rapid Dispersal: […]