DP Biology (first assessment 2025)

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Question 21N.1A.SL.TZ0.18

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1A.SL.TZ0.18
Level SL Paper 1A Time zone TZ0
Command term Question number 18 Adapted from N/A
18.
[Maximum mark: 1]
21N.1A.SL.TZ0.18

In a woodland ecosystem, each tree provides food for numerous aphids which feed on the sap of the tree. The aphids are eaten by carnivorous beetles, as shown in the food chain.

Oak Tree → Aphids → Beetles

Which pyramid of energy represents this relationship?

[1]

Markscheme

C

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