Question

which organism is located at the lowest trophic level of the aquatic food chain? pyramid image with orca, seals, jellyfish, zooplankton, phytoplankton ○ jellyfish ○ phytoplankton

Explanation:

In a trophic pyramid, the lowest level (base) consists of producers that make their own food. Phytoplankton are producers (autotrophs) using photosynthesis, forming the base of the aquatic food chain. Jellyfish are consumers, not at the lowest level.

Answer:

Phytoplankton