In a food chain consisting of phytoplankton → zooplankton → fish → humans, the humans are
A) secondary consumers.
B) tertiary consumers.
C) quaternary consumers.
D) primary producers.

Question

Quizplus · Accepted Answer

Humans are at the top of the food chain in this scenario and are consuming fish, which makes them tertiary consumers. Primary producers are at the base of the food chain, such as the phytoplankton in this scenario. Quaternary consumers would be animals that eat tertiary consumers, which are not present in this food chain.

In a Food Chain Consisting of Phytoplankton → Zooplankton →