Ecological succession Quiz
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5 questions, one answer each
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1. Which is an example of primary succession?
- A. Regrowth of trees after a forest fire
- B. Colonisation of newly formed volcanic rock
- C. A field returning to woodland after it is abandoned
- D. Regrowth of grass after a lawn is left uncut
2. Which describes pioneer species?
- A. The last species to arrive at a site
- B. They are always large trees
- C. They prefer deep, nutrient-rich soil
- D. They tolerate harsh conditions and are the first to colonise
3. Why are pioneer species eventually replaced?
- A. The conditions they create allow other species that outcompete them to colonise
- B. They are unable to reproduce
- C. They are eaten by the other species
- D. The climate becomes hotter
4. What is a feature of a climax community?
- A. It is made up of pioneer species
- B. It is stable, and the species stay much the same over a long time
- C. It has the lowest biomass of any stage
- D. It has no competition
5. Soil organic matter along a dune transect rises from 0.2% to 8.5% inland. What is the best explanation?
- A. The sea adds organic matter to the dunes further inland
- B. The older dunes have been exposed to more wind
- C. Plants have died and decomposed for longer on the older dunes
- D. The younger dunes have more rainfall