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GCSE Biology · key term
A consumer that eats a secondary consumer.
Used by AQA and OCR
Specification 4.7.2.1, 4.7.4.1 · Paper 2
Revise: Food Chains and Predator-Prey RelationshipsIn a longer chain such as alga → water flea → small fish → heron, the water flea is the primary consumer, the small fish is the secondary consumer and the heron is the tertiary consumer.
A carnivore that eats other carnivores and occupies trophic level 4 in the specified sequence.
Do not treat “tertiary consumer” and “apex predator” as synonyms. The first describes what an organism eats; the second states that it has no predators.
Name consumers precisely when possible: primary consumers eat producers; secondary consumers eat primary consumers; tertiary consumers eat secondary consumers.
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Specification B4.1h · Paper 2 (Foundation), Paper 4 (Higher)
A consumer that eats secondary consumers.
Revise: Trophic levelsSecondary and tertiary consumers feed on other consumers. Notice that the primary consumer is trophic level 2: trophic level 1 is occupied by the producer.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
An organism that eats a secondary consumer and occupies the fourth trophic level.
Revise: Trophic LevelsA tertiary consumer eats a secondary consumer and is at the fourth level. The names describe what each consumer eats, rather than its size.