There are three theories that have been put forward to explain the mode of evolution i.e., origin of species. 1. Lamarck's Theory of Evolution: Lamarck proposed that the evolution of life forms had occurred by the use and disuse of organs. He gave the example of Giraffe, which initially did not have long necks. But, in order to reach the [...]
In this article we will discuss about:- 1. Meaning of Species 2. Origin of Species 3. Interactions 4. Interdependence. Meaning of Species: A large variety and numerous individual organisms are found in nature. The organisms do not occur in isolation. Such organisms may be of a kind, as cats, rats, tiger, bean plants, humans, etc. The individual organisms aggregate and [...]
In this article we will discuss about the interaction between different species. In the great web of life, which exists in nature, living organisms not only live in an environment, but are also themselves a part of the dynamic environment for other organisms. The relationship between one species and another within a community has evolved through their interactions, based on [...]