19.4 Predation Flashcards
1
Q
what is meant by predation
A
when one organism (prey) is consumed by another (predator)
2
Q
how does the predator-prey relationship affect the population szei of the predator and prey
A
- Predators eat prey. population of prey reduced.
- less prey available. predators in greater competition with each other.
- predator population reduced. some individuals unable to obtain enough prey for survival/ to reproduce.
- fewer predators= fewer prey eaten. more prey survive and are able to reproduce.
- prey population increases.
- more prey available = predator population increases
3
Q
other reasons for fluctuation in populations
A
disease
climatic factors
