Reef producing coral are called a. mobile b. hermatypic c. limestone polyps d. all of the above

The answer is B)

The reef producing coral are called hermtypic

Option B - Hermatypic

Explanation

Reef producing coral are called hermatypic. Coral reefs are made by coral polyps as they cover sheets of calcium carbonate under their frames. The corals that form reefs are reef producing corals. They build reefs by putting hard calcareous material for their bones, making the firm structure of the reef. Corals belong to the animal kingdom and are members of the phylum Cnidaria. The coral animal is like a sea anemone which has a soft body and tentacles.

rocks and weathering-matching

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hope that !         : )