DP Biology (last assessment 2024)

Test builder »

Question 20N.1.SL.TZ0.16

Select a Test
Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1.SL.TZ0.16
Level SL Paper 1 Time zone TZ0
Command term Question number 16 Adapted from N/A
16.
[Maximum mark: 1]
20N.1.SL.TZ0.16

Which level(s) of ecological complexity involve(s) biotic factors but not abiotic factors?

I. Community

II. Ecosystem

III. Population

A. I only

B. II only

C. I and II only

D. I and III only

[1]

Markscheme

D

Examiners report

Nearly 80 % of candidates answered this question correctly, despite it being multiple completion, which often causes difficulty. The relatively low discrimination index is expected when most candidates answer a question successfully. We can be pleased with questions such as this that widespread understanding of an aspect of biology is demonstrated. Here the understanding was of the differences between populations, communities and ecosystems.

Syllabus sections