ecosystem 3.1 Flashcards
species
an organism which can reproduce to produce fertile offspring
inter-species
two organisms from different species can breed and produce sterile/infertile offspring
population
all the organisms of one species in a particular area (habitat)
ecosystem
all the organisms (community) living in a particular area (habitat) and non-living components with the organisms interact
habitat
a place an organism lives
community
all the living organisms (populations) who live in an ecosystem
biodiversity
the variety of all living things
carnivore
an animal which only eats other animals
omnivore
an animal which eats both plants and animals
herbivore
an animal which eats only plants
what do the arrows in a food chain show
the transfer of energy from one organism to the next
producer
organisms which can make their own food using sunlight
what do all food chains start with
a producer
consumer
an organism which cannot make its own food and therefore feeds off another organism
how is energy lost in the food chain
heat, movement or undigested material
niche
an organisms ecological niche is the role it plays within a community
when does competition occur in a community
whenever two or more members of the community need a particular resource that is in short supply
types of competition
inter specific and intra specific
inter specific
occurs amongst individuals of different species competing for some of the resources they require
intra specific
occurs amongst individuals of the same species competing for all of the resources they require
which type of competition is more intense
intra specific
