Tropic Movements vs Nastic Movements Difference between Tropic and Nastic Movement: Tropic movements and Nastic movements are the two types of induced or paratonic movements of curvature in plants. Tropic movements: The paratonic (induced) movement of growth is called tropic movements. Here the stimuli are external and unidirectional. Example: phototropic movements (movement towards the light) […]
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What is Data in Statistics?
What is ‘data’ or ‘variable’? Ø Data is a set of values of qualitative or quantitative variables. Ø In biostatistics (also in statistics) data are the individual observations. Ø The scientific investigations involve observations on variables. Ø The observations made on these variables are obtained in the form of ‘data’. Ø Variable is a quantity […]
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Biostatistics Introduction (Significance, Applications and Limitations of Statistics)
What is Statistics? Statistics is a branch of applied mathematics which deals with the collection, classification, analysis and interpretation of data. The word statistics is derived from the Latin word ‘status’ means a ‘political state’ or ‘government’. What is Biostatistics? Biostatistics is a branch of biological science which deals with the study and methods of […]
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Phase Contrast Microscopy PPT
Phase Contrast Microscope PPT | What is Phase Contrast Microscope? What are the limitations of ordinary light microscope? Who invented the phase contrast microscope? What is the working principle of phase contrast microscope? What are the optical components of phase contrast microscope? What is the importance of Annular Diaphragm and Phase Plate in phase contrast […]
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Phase Contrast Microscopy – Optical Components, Working Principle and Applications (Short Notes with PPT)
Working Principle of an Ordinary Microscope: In an ordinary microscope, the object is viewed due to differences in colour intensities of the specimen. To create the colour intensities, the specimen is first stained with suitable dyes which will impart specific colour. In an ordinary microscope, the contrast is obtained when the light rays pass through […]
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