DP Biology (first assessment 2025)

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Question 22N.1A.HL.TZ0.16

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1A.HL.TZ0.16
Level HL Paper 1A Time zone TZ0
Command term Question number 16 Adapted from N/A
16.
[Maximum mark: 1]
22N.1A.HL.TZ0.16

The diagram shows part of the carbon cycle involving methane.

[Source: NASA GISS, n.d. Rough schematic of methane sources and sinks. [diagram online] Available at:
https://www.giss.nasa.gov/research/features/200409_methane/ [Accessed 26 October 2021].]

 

Which conditions favour methane production in W, X and Y?

A.  Presence of eubacteria and organic matter

B.  Presence of archaeans and waterlogged soil

C.  Presence of eubacteria and waterlogged soil

D.  Presence of archaeans and oxygen

[1]

Markscheme

B

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