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(B) Species diversity is a product of both species richness and evenness or equitability,i.e.,species richness weighted by species evenness.Odum et al

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Shannon index

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(B) Species diversity is a product of both species richness and evenness or equitability,i.e.,species richness weighted by species evenness.Odum et al. $(1960)$ calculated species diversity $(d)$ as the number of species in relation to the square root of the total number of individuals.In ecological studies,the diversity index most commonly used is the Shannon index (also known as the Shannon-Wiener index).

Column-$I$	Column-$II$
$(P)$ Genetic diversity	$(I)$ Diversity at the genetic level
$(Q)$ Species diversity	$(II)$ Diversity at the species level
$(R)$ Ecological diversity	$(III)$ Diversity at the ecosystem level

Diversity index commonly used in ecological studies is

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Match the following columns:
Column-$I$ Column-$II$
$(P)$ Genetic diversity $(I)$ Diversity at the genetic level
$(Q)$ Species diversity $(II)$ Diversity at the species level
$(R)$ Ecological diversity $(III)$ Diversity at the ecosystem level

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