Ecosystems Flashcards
State what a food chain is
A food chain is a diagram that shows the transfer of energy between organisms.
Sate the difference between a predator and a prey organism
A predator eats other animals. The prey is eaten by other animals
State what a food web is
Linked food chains
State one organism that is needed to pollinate food crops
Bees
State what happens to the population of consumers if the population of the producer decreases.
There will be less consumers since they interdepend on the producers
State what is meant by bioaccumulation
Where chemicals are passed through the food chain or web
State what is meant by an ecosystem.
A name given to plants and animals if they live in a particular habitat.
State what is meant by a habitat
An area in which organisms live
State what is meant by a niche
A particular role an organism has in an ecosystem
State four resources that animals compete for
Food
Water
Territory
Mates
State four resources that plants compete for.
Light
Water
Space
Minerals
State what is meant by interdependence
When organisms depend on each other for survival
State why flowers have petals
They are normally brightly coloured to attracted insects
State where pollen is made
Anther
State three ways pollen can be transferred between plants
Wind, insects or other animals
