A group of organisms belonging to different species that coexist in the same habitat and interact is referred to as

Step 1: Analyze the question The question describes a group of organisms that:

• belong to different species
• live in the same habitat
• interact with one another

Step 2: Explain the concept (levels of ecological organization) From smallest to largest:

• Population: individuals of the same species living in the same area.
• Community: all the populations of different species living and interacting in the same habitat.
• Ecosystem: the community plus its non-living (abiotic) environment.
• Biosphere: all the parts of the Earth where life exists.
• Niche: the role or functional position of an organism in its habitat (what it eats, where it lives, how it behaves). It is not a group of organisms.

Step 3: Check each option

• A. Community: different species, same habitat, interacting. This matches.
• B. Biosphere: far too large. It covers the whole Earth, not one habitat.
• C. Niche: describes a role, not a group of organisms.
• D. Population: only one species, so it does not fit "different species".

Step 4: Answer The correct option is A. community.

Exam tip: Remember the order P-C-E-B: Population → Community → Ecosystem → Biosphere. If the question says "different species," think community. If it says "same species," think population. If it mentions non-living factors as well, think ecosystem.