Measuring biodiversity Quiz
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5 questions, one answer each
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1. What is meant by species richness?
- A. The total number of organisms in a habitat
- B. The number of different species in a community
- C. The number of individuals of each species
- D. The mass of living material in a habitat
2. A sample contains three species with 10, 6 and 4 individuals. What is d, to 1 decimal place?
- A. 1.5
- B. 2.0
- C. 2.9
- D. 6.7
3. Which sample would have the highest index of diversity?
- A. Five species with one species making up 95% of individuals
- B. Five species with equal numbers of each
- C. One species only
- D. Two species with equal numbers of each
4. Why is a high index of diversity usually linked with a stable community?
- A. There are fewer food chains
- B. One species can fill every niche
- C. If one species declines, others can fill its role
- D. Its species are all very rare
5. A student calculates d from one small sample taken in one month. Which comment is most valid?
- A. The value must be accurate because it is calculated
- B. The sample may not represent the habitat, so the value may be unreliable
- C. The value is only valid for the whole Earth
- D. The value cannot be compared with any other