Population Control: Competition, Predation & Symbiosis (Leaving Cert Biology): Flashcards

All members of a species in an area

Similar organisms that can interbreed & produce fertile offspring

Struggle between organisms for a resource in short supply

Competition between members of different species

Competition between members of the same species

Active physical struggle; one winner and one loser

All competing organisms get some of the resource

Catching, killing & eating another organism for food

Trait or behaviour helping organism survive & reproduce

Increases (more food available)

Predator always follows prey

Two species living closely where at least one benefits

Symbiosis where one species gains & the other loses

Symbiosis where both organisms benefit

Bacteria in gut produce vitamin K for human