Adaptations, Interdependence & Competition (AQA GCSE Biology): Flashcards
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Biotic factors definition
Biotic factors definition
Living components of an ecosystem that affect organisms
What do biotic factors influence?
What do biotic factors influence?
Survival, reproduction, distribution
Effect of plentiful food on population
Effect of plentiful food on population
Population increases (more successful breeding)
Effect of food shortage on population
Effect of food shortage on population
Population declines
Impact of new predators arriving
Impact of new predators arriving
Reduce prey population, can cause extinction
What are pathogens?
What are pathogens?
Disease-causing organisms (bacteria, viruses, fungi)
Why new pathogens threaten populations
Why new pathogens threaten populations
No immunity/resistance leads to rapid disease spread
Competition definition (biotic)
Competition definition (biotic)
Species vie for same resources
Resources competed for in ecosystems
Resources competed for in ecosystems
Food, water, territory
Result when species better adapted in competition
Result when species better adapted in competition
Outcompetes others, their population declines
Extreme result for outcompeted species
Extreme result for outcompeted species
May face local extinction