19.3 - Competition & Predation Flashcards
Types of competition between organisms Interspecific competition and the competitive exclusion principle Stages of intraspecific competition Predator-prey relationships
What is competition?
And what type of factor is it?
- Biotic factor
- limiting population size by decreasing resources
What are the two main types of competition?
Interspecific and intraspecific
What is interspecific competition?
Competition between different species
What is the competitive exclusion principle?
Species using resources more efficiently outcompetes others
What is intraspecific competition?
Competition within the same species
What does intraspecific competition result in?
Natural population fluctuations
What is predation?
Hunting and consumption of one species by another
How do predator-prey relationships affect population sizes?
Interplay of predator and prey numbers
What is the typical lag in predator-prey population sizes?
Lag between peak populations of predators and prey
What is the effect of predator-prey dynamics on evolution?
Selection pressure on both groups
What are typical adaptations of predators?
Sudden bursts of speed
What are typical adaptations of prey?
Mimicry
