CAIE IGCSE Biology 19.2.16 Pyramids of Energy Questions

Practise explaining why pyramids of energy represent transfer through food chains more accurately than numbers or biomass.

Exam points

state that energy pyramids show actual energy transfer through a food chain over time
explain how energy pyramids account for organism size, lifespan, reproduction rate and seasonal variation

[Maximum number: 2]

Fig. 6.2 shows the pyramid of energy for a food chain in an ocean ecosystem.

Fig. 6.2

State two advantages of using a pyramid of energy rather than a pyramid of biomass to represent a food chain.

1

2

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