Question

1. living oceans: classification

what is symbiodinium? select one answer.
○ a sub - class of tentacle - less jellyfish
○ algae that give coral polyps their color.
○ two organisms living in harmony
○ a species of hard corals located on atoll reefs

Explanation:

Symbiodinium is a type of dinoflagellate algae. It has a symbiotic relationship with coral polyps. Through photosynthesis, it provides energy to the coral. Also, the pigments in Symbiodinium give coral polyps their color.

• Option A: Symbiodinium is not a jellyfish sub - class. Jellyfish are animals, while Symbiodinium is a type of algae (a protist).
• Option C: Symbiodinium is a single - organism (a type of algae), not two organisms.
• Option D: Symbiodinium is not a coral species. Corals are animals, and Symbiodinium is an algae that lives within coral tissues.

Answer:

Algae that give coral polyps their color.