CAIE IGCSE Biology 19.2.6 Consumer Levels in Food Chains

Practise classifying primary, secondary, tertiary and quaternary consumers by their position in a food chain or web.

Exam points

identify primary to quaternary consumers by tracing feeding links from the producer
recognise that one species can occupy different consumer levels in a food web
count consumers at a stated level from a food-chain or food-web diagram

[Maximum number: 1]

The ant-mimic jumping spider, Myrmarachne formicaria, is shown in Fig. 1.1.
The common name of this species describes its behaviour. It is an arachnid that tricks its prey because it looks like the insects that it eats.

Fig. 1.1

Suggest which trophic level in a food chain M. formicaria could belong to.

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19.2.6—Consumers may be classed as primary question 1