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6.4 Classification of living organisms

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Question 4

Living fern species M and N have been placed on an evolutionary tree using current classification data. An extinct fern species, L, is known from fossil data.

Living fern speciesNumber of structural features shared with species L
M8
N5

Two proposed trees place species L differently:

  • Tree 1: L shares a more recent branch point with M than with N.
  • Tree 2: L shares a more recent branch point with N than with M.

Which proposed tree is better supported by the evidence? Explain your choice.

[3]
Markscheme

6.4 Classification of living organisms Questions

  1. GCSE
  2. /Biology
  3. /6.4 Classification of living organisms

81 exam-style questions on AQA GCSE Biology 6.4 Classification of living organisms, covering 6.4 Classification of living organisms. Each one has a worked solution and a mark scheme showing where the marks go.

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