D4.2 Stability and change Quiz
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5 questions, one answer each
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1. Which is a requirement for ecosystem stability?
- A. Constant harvesting
- B. Recycling of nutrients
- C. Removal of predators
- D. Absence of decomposers
2. HL: Primary succession begins on:
- A. Abandoned farmland
- B. Ground with no soil
- C. A forest after a small fire
- D. A grazed meadow
3. HL: Which decreases during primary succession?
- A. Species diversity
- B. Plant size
- C. Nutrient cycling
- D. None of these
4. HL: Sheep grazing that keeps a hillside as grassland is:
- A. Primary succession
- B. Cyclical succession
- C. Arrested succession
- D. Eutrophication
5. HL: In cyclical succession:
- A. There is one permanent climax
- B. Communities replace each other in a repeating cycle
- C. Succession never starts
- D. Only animals change