Ecological niche definition

Ecological niche is a comprehensive concept that includes both the physical space (microhabitat) and the functional role of an organism within an ecosystem. It encompasses what an organism eats, where it lives, when it is active, and how it interacts with other organisms. Habitat (option c) refers only to the physical location where an organism lives. Ecotone (option a) is a transition zone between two different ecosystems. Home range (option d) is the area an animal travels within for feeding and other activities. Only ecological niche combines both spatial and functional aspects. > Niche = Habitat + Role (job/function) in ecosystem. Each species has unique niche.