Question

name the primary consumers in this food web. penguin and crab; phytoplankton and seaweed; krill, crab, and zooplankton; seagull and fish

Explanation:

Primary consumers are organisms that eat producers (autotrophs like plants or phytoplankton). Let's analyze each option:

• "penguin and crab": Penguins are secondary or higher consumers (they eat other animals), so this is wrong.
• "phytoplankton and seaweed": These are producers (autotrophs), not consumers, so this is wrong.
• "krill, crab, and zooplankton": Krill, crab, and zooplankton eat producers (like seaweed, phytoplankton), so they are primary consumers.
• "seagull and fish": Seagulls and many fish are higher - level consumers (eat other animals), so this is wrong.

Answer:

C. krill, crab, and zooplankton