Question

Which chart correctly shows three organisms according to their roles in cycling matter in the marine food web?

A) Tertiary Consumer: seal, Quaternary Consumer: polar bear, Decomposer: bacteria
B) Tertiary Consumer: fish, Quaternary Consumer: krill, Decomposer: bacteria
C) Tertiary Consumer: seal, Quaternary Consumer: polar bear, Decomposer: ice algae
D) Tertiary Consumer: seal, Quaternary Consumer: fish, Decomposer: seal

Answer 1

B) Tertiary Consumer: fish, Quaternary Consumer: krill, Decomposer: bacteria. The correct chart that shows the roles of organisms in cycling matter in the marine food web is: Tertiary Consumer: fish, Quaternary Consumer: krill, Decomposer: bacteria.

Step-by-step explanation:

The chart that correctly shows three organisms according to their roles in cycling matter in the marine food web is B) Tertiary Consumer: fish, Quaternary Consumer: krill, Decomposer: bacteria.

In a marine food web, phytoplankton are the primary producers. They are consumed by krill, which act as the primary consumers. Fish, as tertiary consumers, prey on krill. Bacteria function as decomposers and break down dead matter, returning nutrients back into the ecosystem.