Populations Flashcards
ecosystems definition
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.
individuals’ definition
Individual organisms are the smallest part of an ecosystem.
populations definition
Populations of individual organisms make up a single species.
communities’ definition
Communities are made up of populations of different species living in the same habitat (environment or area).
habitat definition
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.
name 2 types of ecosystems:
- savannah ecosystem
- marine ecosystem
what does it mean by competition for resources?
Organisms need resources from both abiotic and biotic parts of an ecosystem to survive and reproduce. But resources are not infinite. Different species and different individuals compete for resources.
what does it mean by the term competition between plants?
Plants often compete for water and mineral ions (minerals) from the soil, as well as for light and space.
what does it mean by the term competition between animals
Animals often compete for food, mates and territory.
what does it mean by species Interdependence?
There is interdependence between different species. This means that one species may rely on another species for different things.
what does it mean by the term pollination?
A species may depend on another for pollination (transfer of pollen).
what does it mean by the term seed dispersal?
A species may depend on another to spread its seeds.
what does it mean by the term food?
A species may depend on another for food.
what does it mean by the term shelter?
A species may depend on another for shelter.
