DP Biology (first assessment 2025)

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Question 19N.2.HL.TZ0.3a

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Date November 2019 Marks available [Maximum mark: 2] Reference code 19N.2.HL.TZ0.3a
Level HL Paper 2 Time zone TZ0
Command term Describe Question number a Adapted from N/A
a.
[Maximum mark: 2]
19N.2.HL.TZ0.3a
(a)

Describe what is shown in a cladogram.

[2]

Markscheme

a. similarities/differences between organisms/species/clades ✔ mpa and mpd concern actual characteristics, not evolutionary relationships.

b. «probable» evolutionary relationships/closeness/common ancestry/phylogeny ✔ mpb concerns such relationships

c. divergence/splits/speciation/branches/nodes ✔ mpc concerns the structure branching of the cladogram

d. relative similarity/differences between base sequence/amino acid sequence ✔

Syllabus sections