Some Dinoflagellates Live Endosymbiotically with Corals

question 1

Multiple Choice

Some dinoflagellates live endosymbiotically with corals.When they die or are expelled by the corals-a phenomenon called "coral bleaching"- the corals can be damaged or destroyed because the dinoflagellates

• A) protect corals against parasites.
• B) bring microorganisms past feeding coral with the current created by their flagella.
• C) contribute to coral nutrition through photosynthesis.
• D) create phosphorescence that attracts prey microorganisms to corals.
• E) release toxins that immobilize microorganisms on which corals feed.

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