In this article we will discuss about Viruses:- 1. Meaning of Viruses 2. Sizes and Shapes of Viruses 3. Structure. Meaning of Viruses: Virus is a Latin word which means poison. Adolf Mayer described for the first time a disease of tobacco plant. Dimitri Ivanowski, a Russian botanist in 1892 demonstrated experimentally that sap of […]
Notes on Viruses: Meaning, Size and Structure
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Mitochondria in Plants and Animals
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In this article we will discuss about Mitochondria in Plants and Animals. After reading this essay you will learn about:- 1. Subject-Matter of Mitochondria 2. Morphology of Mitochondria 3. Structural Variations 4. Chemical Composition 5. Development 6. Origin. Contents: Essay on the Subject-Matter of Mitochondria Essay on the Morphology of Mitochondria Essay on the Structural […]
Plastids: Subject Matter and Classification | Cells
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In this article we will discuss about the Subject Matter and Classification of Plastids: Subject Matter of Plastids: Plastids are unique and discrete cytoplasmic organelles found in the cells of most of the plants and certain unicellular organisms particularly protozoa, but not in the cells of higher animals. Although Comparethi (1791) noticed the presence of […]
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