NEET BIOLOGY

Detailed explanation-1: -A community’s structure can be described by its species richness, which is the number of species present, and species diversity, which is a measure of both species richness and species evenness (relative numbers).

Detailed explanation-2: -The total number of different species in a community is referred to as the species richness. From the relative abundance of each species in a community, one can determine how biologically diverse that community is.

Detailed explanation-3: -Species richness (S) is the number of species within a defined region. The species richness of a region is obtained through sampling or via a census. Because “region” is defined by the observer, species richness has been further categorized into three components to account for changes in spatial scale.

Detailed explanation-4: -Species richness is simply the number of species in a community. Species diversity is more complex, and includes a measure of the number of species in a community, and a measure of the abundance of each species. Species diversity is usually described by an index, such as Shannon’s Index H’.