Question

Arrange the following ecological hierarchy in the ascending order from top to bottom.

• A. Organism
• B. Population
• C. Community
• D. Ecosystem

Answer 1

An ecosystem is an integrated functional unit that consists of many successive levels of organization, which can be called the ecological hierarchy. The basic component or the lowest level in this hierarchy is the organism. An interbreeding group of organisms of the same species is called a population. A group of interacting populations forms a community. A community and its physical environment together forms the ecosystem.