Investigating an Ecosystem (LC 2027) (Leaving Cert Biology): Flashcards
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15 cards from this deck
Biotic factors
Biotic factors
Living components that influence other organisms
3 main types of biotic factors
3 main types of biotic factors
Predation, competition, symbiosis
Predation
Predation
One organism hunts & consumes another for survival
When do prey populations peak?
When do prey populations peak?
Before predator populations peak
Competition (biotic)
Competition (biotic)
Organisms struggle for limited resources
Intra-specific competition
Intra-specific competition
Between members of same species
Inter-specific competition
Inter-specific competition
Between members of different species
Contest competition
Contest competition
Direct confrontation; winner gets all, others get nothing
Scramble competition
Scramble competition
All share resource; none may get enough
Symbiosis
Symbiosis
Close relationship between 2 different species; at least 1 benefits
Mutualism
Mutualism
Both organisms benefit from the relationship
Commensalism
Commensalism
One benefits, other unaffected
Parasitism
Parasitism
One benefits (parasite), other harmed (host)
Ectoparasites
Ectoparasites
Parasites living outside their host
Endoparasites
Endoparasites
Parasites living inside their host