Dinoflagellates Have Endosymbiotic Relationships with Corals

question 60

Multiple Choice

Dinoflagellates have endosymbiotic relationships with corals.Corals cannot produce photosynthetic pigments, but they receive photosynthetic products from dinoflagellates.Which of the following might explain why corals are damaged or destroyed by excessive turbidity of ocean waters?

• A) Corals cannot see their prey in the turbid water.
• B) Turbid waters block sunlight from reaching photosynthesizing dinoflagellates.
• C) Dinoflagellates are unable to filter out nonorganic particulates during feeding.
• D) Increased particulates prevent dinoflagellates from entering the coral.
• E) The increasing temperatures cause dinoflagellates to expel their chloroplasts.

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