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Question 20N.1.HL.TZ0.40

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1.HL.TZ0.40
Level HL Paper 1 Time zone TZ0
Command term Question number 40 Adapted from N/A
40.
[Maximum mark: 1]
20N.1.HL.TZ0.40

The graph shows three hormones circulating during pregnancy in the rat, with birth occurring at 22 days.

[Source: Dr Paul Kenyon University of Plymouth (retired).]

 

What are hormones X and Z?

[1]

Markscheme

D

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