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Question
Species richness can be defined as
Options:
A .  Number of species in a given area
B .  Number of organisms per unit area
C .  Total number of species on earth
D .  Number of individuals in a population per unit area
Answer: Option A
:
A
Species richness is defined as the number of species in a given area. It does not take into account the relative abundance or distribution of the species. The total number of species on earth denotes the biodiversity of the planet and the number of individuals in a population per unit area is the population density.

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