AOS 3 (adaptations and diversity)
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23 Terms
ecosystem
a self-sustaining unit consisting of the interactions between the community and the environment
2 parts of an ecosystem
abiotic and biotic
abiotic
relating to the non-living components of an ecosystem
biotic
relating to the living components of an ecosystem
population
a group of individuals belonging to the same species living in a particular area at the same time
community
the sum of the different species inhabiting a particular habitat at one time
habitat
an environment in which an individual or species lives within an ecosystem
environment
abiotic and biotic factors of an area
genetic diversity
the range of genotypes of individuals in the population of a species or the entire species
when there is a lack of genetic diversity could result in
extinction
extinction
the status of a species when there are no living members
adaptation
an inherited characteristic that makes an organism better suited to its environment and increases its chances of survival and reproduction
3 types of adaptations
behavioural, physiological and structural adaptations
structural adaptations
an inherited feature of an organisms anatomy that increases its chances of survival and reproduction
behavioural adaptations
an inherited way in which an organism acts that increases its chances of survival and reproduction
physiological adaptations
an inherited characteristic in functioning of an organism that increases its chances of survival and reproduction
biological interdependencies
are interactions between different species that affect an organism’s survival and reproduction and the functioning of the ecosystem
2 types of Biological interdependencies
indirect and direct
food chains
a sequence of trophic levels in which an organism is consumed by an organism in a higher trophic level
trophic levels
a feeding level in the food chain of an ecosystem
food webs
a network of feeding relationships that shows flow of energy and matter through complex pathways
5 trophies levels
Primary producer, primary consumer, secondary consumer, tertiary consumer and quaternary consumer
Predator
An organism that hunts another organism