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Which level of ecological organisation includes all the different species living in a particular area?
Community
Population
Ecosystem
Habitat
Community
A community in ecology refers to the collection of populations of different species that inhabit the same geographical area at the same time. These populations interact with one another through various biological relationships such as predation, competition, and symbiosis.
A community in ecology refers to the collection of populations of different species that inhabit the same geographical area at the same time. These populations interact with one another through various biological relationships such as predation, competition, and symbiosis.
If a single type of tree is a 'population', then an entire forest containing trees, birds, squirrels, and fungi interacting together is the 'community'.
P-C-E (Population-Community-Ecosystem): 'People gather in Communities to build an Ecosystem'.
Community=тИСi=1nтАЛPopulationiтАЛ тАФ where n is the number of distinct species.
Ecological organization follows a hierarchical structure: Individual тЖТ Population тЖТ Community тЖТ Ecosystem тЖТ Biome тЖТ Biosphere. The community level focuses specifically on the biotic (living) component, analyzing how diverse species interact within a shared environment to form a complex biological network.
A community consists only of biotic components.
Interactions include mutualism, commensalism, parasitism, and competition.
Community structure is defined by species richness and species evenness.
An ecosystem includes the community plus the abiotic (non-living) environmental factors.
Helps in understanding biodiversity dynamics.
Essential for conservation and wildlife management.
Food web analysis in a wildlife sanctuary.
Impact assessment of invasive species on local biodiversity.
Option B (Population) refers to a group of individuals of the same species.
Option C (Ecosystem) encompasses both the biotic community and the abiotic factors like soil, water, and climate.
Option D (Habitat) is the physical environment where an organism lives, not the biological organization itself.
A is correct тАФ A community represents all the interacting populations of different species within a specific area.
In competitive exams, always distinguish between 'Community' (biotic only) and 'Ecosystem' (biotic + abiotic) to avoid common trick questions.
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