What term is used for the group of organisms of the same species living in the same area?

The term that describes a group of organisms of the same species living in the same area is known as "population." In ecological studies, a population consists of individual organisms that are capable of interbreeding and share the same environmental conditions. This concept is fundamental in understanding how species interact with one another and their environment, as well as how populations can grow, decline, or respond to changes in their surroundings.

Other terms mentioned in the choices refer to different ecological concepts. For example, a community is composed of multiple populations of different species that interact within a particular area. A biome refers to a large ecological area characterized by distinct vegetation and climate conditions, like forests or deserts. An ecosystem includes both the living organisms (biotic factors) and the non-living components (abiotic factors) in a certain area, illustrating the interconnections between species and their environment. Therefore, the precise definition of a population makes it the most suitable answer in this context.