Biodiversity and its measurement Quiz
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5 questions, one answer each
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1. Which of these is the best description of an endemic species?
- A. A species that has been introduced and spreads quickly
- B. A species found naturally in one area only
- C. A species that is found in every habitat
- D. A species that has very high genetic diversity
2. A sample of 25 organisms has 5 heterozygotes at a locus. What is the heterozygosity index?
- A. 0.05
- B. 0.25
- C. 5.0
- D. 0.20
3. A habitat contains three species with 6, 3 and 1 individuals. What is the index of diversity, D?
- A. 2.5
- B. 1.9
- C. 3.0
- D. 10.0
4. Why is the index of diversity better than species richness for comparing two habitats?
- A. It is quicker to calculate
- B. It measures genetic diversity within one species
- C. It takes account of the number of individuals of each species
- D. It only counts the rarest species
5. Two fields each contain four species. Field X has the individuals shared fairly evenly. Field Y has 97% of individuals belonging to one species. Which statement is correct?
- A. The two fields have the same species richness, but field X has a higher D
- B. The two fields have the same species richness and the same D
- C. Field Y has a higher D than field X
- D. Field X has a lower species richness than field Y