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← Theoretical 2

Q63 — Land Plant Phylogeny — Evaluating Four Cladograms

Theoretical 2 Real exam question — full text reproduced under IBO's CC BY-NC-SA 4.0 license
Plant Body Plans Across Major Lineages

The following cladograms show the course of the evolution of green algae and land plants.

Figure. Four candidate cladograms: (I) green alga, (moss, hornwort); (II) pine, (fern, cycad); (III) club-moss, (fern, liverwort); (IV) green alga, (moss, horsetail). Figure. Four candidate cladograms (I–IV) of green algae and land plant relationships.

Observe them and determine if they describe the evolution correctly (true) or incorrectly (false).

A. Cladogram I.
B. Cladogram II.
C. Cladogram III.
D. Cladogram IV.
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Question reproduced from IBO 2022, Theoretical Paper 2, licensed under CC BY-NC-SA 4.0 — attributed to the International Biology Olympiad. Open the full exam PDF · Community solutions (unofficial)