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A Level Biology: Classification, biodiversity and conservation MCQs — Biology (page 2)

31 multiple-choice questions on A Level Biology: Classification, biodiversity and conservation from Biology, each with the correct answer and, where available, a teacher's explanation. Read through them to revise the chapter, then practise the same questions one by one to test yourself.

26. HIV is a virus with

  1. single-stranded DNA
  2. double-stranded RNA
  3. single-stranded RNA
  4. double-stranded DNA

Answer: C) single-stranded RNA

Explanation: HIV is an ssRNA retrovirus. AS & A Level Biology · Topic 18 Classification, Biodiversity and Conservation · 18.1 Classification

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27. Organisms in the kingdom Protoctista are

  1. eukaryotes that are not plants, animals or fungi
  2. all multicellular plants
  3. viruses
  4. all prokaryotes

Answer: A) eukaryotes that are not plants, animals or fungi

Explanation: A diverse eukaryotic group. AS & A Level Biology · Topic 18 Classification, Biodiversity and Conservation · 18.1 Classification

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28. Calculate Simpson's index for two species with 5 individuals each (N = 10).

  1. 1.0
  2. 0.5
  3. 0
  4. 0.25

Answer: B) 0.5

Explanation: 1 − (0.25 + 0.25) = 0.5. AS & A Level Biology · Topic 18 Classification, Biodiversity and Conservation · 18.2 Biodiversity

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29. A line transect is used to

  1. record changes in species along an environmental gradient
  2. measure diversity directly
  3. mark animals
  4. estimate the size of mobile animal populations

Answer: A) record changes in species along an environmental gradient

Explanation: Transects show distribution along a gradient. AS & A Level Biology · Topic 18 Classification, Biodiversity and Conservation · 18.2 Biodiversity

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30. CITES conserves endangered species by

  1. publishing the Red List
  2. regulating international trade in endangered species and their products
  3. running zoos
  4. storing seeds

Answer: B) regulating international trade in endangered species and their products

Explanation: Trade control. AS & A Level Biology · Topic 18 Classification, Biodiversity and Conservation · 18.3 Conservation

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31. A Pearson's correlation coefficient of −0.95 shows

  1. no correlation
  2. causation
  3. a weak positive correlation
  4. a strong negative linear correlation

Answer: D) a strong negative linear correlation

Explanation: Close to −1. AS & A Level Biology · Topic 18 Classification, Biodiversity and Conservation · 18.2 Biodiversity

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