There are seven levels of organization in ecology, they are - organism (individual), population, communities, landscape, ecosystem, biome and biosphere.
Organisms (individual): An organism is the unit of ecology. At the level of the organism, physiology, behaviour, distribution and adaptations in relation to the environmental conditions are studied
Population: It is the total number of individuals of the same species inhabiting a given area.
Biological Community: It is an assemblage of the population of different species present in an area which show interdependence and interaction like competition, predation, host-parasite, amensalism, etc.
Ecosystem: It is composed of a biological community, integrated with its physical environment through the exchange of energy and recycling of the nutrients.
Landscape: A unit of land with natural boundary having a mosaic of patches which generally represent different ecosystems.
Biome: Biome is a large regional unit. A biome represents to a specific climatic zone. As per climate, type of biome determined by specific vegetation and their associated fauna.
Biosphere: It is a life-supporting zone that comprises all the earth’s terrestrial and aquatic biomes.
