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What name is given to the organism at the very top of a food chain?
AThe primary producer
BThe primary consumer
CThe tertiary producer
DThe apex consumer
Answer & Solution
Correct answer: D. The apex consumer
1. Photosynthetic organisms at the bottom are the primary producers.
2. Herbivores that eat them are the primary consumers.
3. Carnivores stack above that as secondary and then tertiary consumers.
4. Whatever sits at the very top is the apex consumer, such as the Chinook salmon in Lake Ontario.
_Source: OpenStax Biology 1e (CC BY 4.0), Chs 44 and 46, section 46.1 Ecology of Ecosystems_
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