U3 Ecosystems Flashcards
Define species
A group of organisms which can interbreed to produce fertile offspring
Define biodiversity
Degree of variation which exists among living organisms
Define population
The number of one species within a community
Define community
All the living organisms in an ecosystem
Define producer
An organism which produces its own energy from an abiotic source
Define consumer
An organism which gains its energy from a biotic source
Define herbivore
Organism which eats only plant material
Define carnivore
Organism which eats only animal material
Define omnivore
Organism which consumes both plant and animal material
Define predator
Species which hunt prey for food
Define prey
Species which are hunted for food by predators
Define food chain
Sequence which shows the flow of energy and nutrients between organism
Define food web
Chart which shows the flow of energy and nutrients between organisms inside an ecosystem
Define ecosystem
All the living organisms in a habitat interacting with the abiotic factors
What is an animals niche?
The role in which it performs in an ecosystem
