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Question 20N.1A.HL.TZ0.23

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1A.HL.TZ0.23
Level HL Paper 1A Time zone TZ0
Command term Question number 23 Adapted from N/A
23.
[Maximum mark: 1]
20N.1A.HL.TZ0.23

The cladogram shows some of the groups in the three domains.

[Source: Adapted from Eric Gaba (Sting, fr:Sting), Cherkash, Public domain, via Wikimedia Commons.
https://commons.wikimedia.org/wiki/File:Phylogenetic_tree.svg.]

 

What domains do X, Y and Z represent?

[1]

Markscheme

C

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