9.1 Ecosystems Flashcards
define ecosystem
all the living things (biotic components)
together with all the non-living things (abiotic
components) in an area.
define population
all the organisms that belong to that same species living in a
defined area at the same time
Community:
a group of populations of different species that live together in an area and interact with each other.
define habitat
the place within an ecosystem in which a particular species of organisms lives
define niche
the role of a species within the ecosystem.
define biotic and give examples biotic (living) components of an ecosystem
living things-
producers, primary, secondary and
tertiary consumers, decomposers
Define non-biotic and give examples of abiotic (non-
living) components of an ecosystem
Non-living things
components of the environment:
temperature, humidity, water, oxygen,
salinity, light, pH
f Producers
organisms within an ecosystem that can
carry out
photosynthesis.
Primary consumers:
organisms within an ecosystem
that derive
their food from producers.
Primary consumers:
organisms within an
ecosystem that derive
their food from primary
consumers.
Tertiary consumers:
Tertiary consumers: organisms within an ecosystem
that derive
their food from secondary consumers
Decomposers
organisms within an ecosystem that
derive their
food from the bodies of dead organisms.
biotic interactions (3)
competition, predation and pollination
competition
Habitats have limited amounts of the resources needed by living organisms.
Organisms must compete with others in order to get enough of these resources to survive. If they are unsuccessful and cannot move to another habitat, they will die.
Predation
when one animal eats another.
