5.1.1

Ecosystems

Test yourself

Ecosystems

An ecosystem is made up of living (biotic) and non-living (abiotic) parts. In an ecosystem, there are different levels of organisation: individuals, populations and communities. These organisms are adapted to specific habitats.

Illustrative background for IndividualsIllustrative background for Individuals ?? "content

Individuals

  • Individual organisms are the smallest part of an ecosystem.
Illustrative background for PopulationsIllustrative background for Populations ?? "content

Populations

  • Populations of individual organisms make up a single species.
Illustrative background for CommunitiesIllustrative background for Communities ?? "content

Communities

  • Communities are made up of populations of different species living in the same habitat (environment or area).
Illustrative background for HabitatIllustrative background for Habitat ?? "content

Habitat

  • A habitat is the combination of biotic and abiotic factors within the natural environment that an organism occupies.
  • Different species are adapted to different habitats.

Jump to other topics

1The Nature & Variety of Living Organisms

2Structure & Functions in Living Organisms

3Organism Functions

3.1Respiration

3.2Gas Exchange

3.3Transport

3.4Excretion

3.5Coordination & Response

4Reproduction & Inheritance

5Ecology

6Biological Resources

Unlock your full potential with Seneca Premium

  • Unlimited access to 10,000+ open-ended exam questions

  • Mini-mock exams based on your study history

  • Unlock 800+ premium courses & e-books

Get started with Seneca Premium