In an aquatic environment, microscopic animals and plants are collectively known:
Correct answer: D. Planktons
- A. Commensals
- B. Herbivores
- C. Fauna and flora
- D. Planktons
Explanation
Plankton are microscopic organisms that drift with water currents, including phytoplankton such as algae and zooplankton such as tiny animals. Commensals and herbivores describe ecological relationships or feeding roles, not this whole drifting community.
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