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Quantitative Characters - Population Density
Density denotes the average number of individuals of a particular species in a unit area. In other words, it represents the numerical strength of a species in a community. A study of density makes it possible to have accurate and direct comparisons of the abundance of species between different areas. Density also gives an idea of the degree of competition between the members of the same species as well as of one species with the other. It is calculated as follows:
Density = Total number of individuals of a species in all the sampling units / Total number of sampling units studied
The value thus obtained is expressed as number of individuals per unit area.
What is Density-dependent and density-independent Factors? Density-dependent : Ecologists identify population-regulating mechanisms whose functioning is related to density a
How can proteins be classified? Give suitable examples. Proteins can be classified based on: Shape and size: fibrous or globular proteins. Functional properties: I
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Results: The risk of isolated aortic valve replacement is 3-4 per cent. The long term survival for 5, 10 and 15years is 75 per cent, 60 per cent and 40 per cent respectively. The
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Which of the following activators is correctly paired with the glycolytic or gluconeogenic enzyme that is activates? -AMP: Fructose 1,6 Bis -Citrate: Fructose 1,6 Bis -Fru
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What do numeric pyramids represent? Numeric pyramids show the number of individuals in each trophic level of a food chain.
Q. Do echinoderms have circulatory and respiratory systems? In echinoderms there are not well- defined respiratory with the exception of the holothurian group and circulatory s
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