IB Biology SL 4.1.3 Overpopulation and Competition
Practise explaining how overproduction, limited resources and competition create selection pressure and shape survival and reproduction.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Explain how overproduction creates competition when resources cannot support every offspring.
- Link competition and inherited variation to differential survival and reproduction.
D4.1.3—Overproduction and competition question 1
[Maximum number: 4]
Outline how overpopulation of a species in a given environment may lead to evolution.
more are born than can survive; there is variety/variability in the offspring;
competition for resources / struggle for survival / selection pressure; only the most able/adapted survive / survival of the fittest; the survivors reproduce and pass on genes; genes of less able/adapted are eliminated / change in the gene pool; natural selection occurs;
All question bank results loaded