DP Biology (first assessment 2025)

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Question 21M.1A.SL.TZ1.20

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1A.SL.TZ1.20
Level SL Paper 1A Time zone TZ1
Command term Question number 20 Adapted from N/A
20.
[Maximum mark: 1]
21M.1A.SL.TZ1.20

Over time, the hull of a sunken ship may become colonized by a wide range of marine organisms. What term is used to describe all of the organisms living in and on a sunken ship?

A. A community

B. An ecological niche

C. A population

D. An ecosystem

[1]

Markscheme

A

Examiners report

This question was criticised on G2 forms for being confusingly worded, but it had a good discrimination index and nearly 60 % of candidates answered correctly. The question asked about the animals around the sunken ship and not the ship as well, so the answer was community rather than ecosystem.

Syllabus sections