Biotic Factors (OCR GCSE Biology A, Combined (Gateway Science Suite)): Flashcards
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Biotic factors
Biotic factors
Living components that affect organisms in an ecosystem
What biotic factors influence
What biotic factors influence
Survival, reproduction, distribution of organisms
Effect of plentiful food on population
Effect of plentiful food on population
Increases population through successful breeding
Effect of food shortage on population
Effect of food shortage on population
Population decline
Impact of new predators on prey
Impact of new predators on prey
Reduce prey population, can cause extinction
Pathogens
Pathogens
Disease-causing organisms (bacteria, viruses, fungi)
Why new pathogens spread rapidly
Why new pathogens spread rapidly
Population has no immunity or resistance to them
Competition (biotic factor)
Competition (biotic factor)
Species/individuals vie for same resources
Resources organisms compete for
Resources organisms compete for
Food, water, territory
Result when species is better adapted
Result when species is better adapted
Outcompetes less adapted species
Extreme result of being outcompeted
Extreme result of being outcompeted
Local extinction