Which organism is a crustacean zooplankton commonly found in marine ecosystems?

Study for the IB Marine Science Standard Level Exam. Prepare with interactive quizzes and in-depth explanations. Use our resources to excel in your marine science knowledge!

Multiple Choice

Which organism is a crustacean zooplankton commonly found in marine ecosystems?

Explanation:
Copepods are small crustacean animals that dominate marine zooplankton. They are tiny drifting crustaceans, incredibly abundant in oceans, and form a major link in the food web by feeding on phytoplankton and serving as prey for larger animals. Angiosperms are flowering plants, not animals. Cyanobacteria are photosynthetic bacteria, not crustaceans. Foraminifera are protists with calcium carbonate shells, not crustaceans. So copepod best fits as a crustacean zooplankton commonly found in marine ecosystems.

Copepods are small crustacean animals that dominate marine zooplankton. They are tiny drifting crustaceans, incredibly abundant in oceans, and form a major link in the food web by feeding on phytoplankton and serving as prey for larger animals. Angiosperms are flowering plants, not animals. Cyanobacteria are photosynthetic bacteria, not crustaceans. Foraminifera are protists with calcium carbonate shells, not crustaceans. So copepod best fits as a crustacean zooplankton commonly found in marine ecosystems.

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