In this article we will discuss about:- 1. Simple-Cell Insect Colony 2. Social Organisation in Communal Insects 3. Characteristics. Simple-Cell Insect Colony: In those protozoa which reproduce sexually, the zygote or the cell individual formed by the union of the gametes divides by fission into two or more individuals like itself and these usually separate and lead their own independent [...]
The following points highlight the four theories for organic evolution of living organisms. The theories are: 1. Lamarckian Theory 2. Darwinism and the Theory of Natural Selection 3. Synthetic Theory of Evolution 4. De Vries—The Theory of Mutation. Theory # 1. Lamarckian Theory: Jean Baptiste de Lamarck (1744-1829), a French Scientist, was undoubtedly the first biologist to propose a definite [...]
The following points highlight the nine evidences for organic evolution of living organisms. The evidences are: 1. Bio-Geographical 2. Morphological 3. Embryological 4. Geological 5. Taxonomical 6. Comparative Physiology and Biochemistry 7. Cytogenetical 8. Domestication 9. Specific Adaptations. Evidence # 1. Bio-Geographical: The study of biogeography or the geographical distribution of animals and plants on the surface of the earth [...]