how are polyps and coral related?

Question

each coral is made up of tiny animals called polyps
each coral is made up of algae called polyps
polyps are the dead, hard part of coral
polyps are born in coral and then swim away

Answer 1

The correct answer is: each coral is made up of tiny animals called polyps. Corals are colonies of numerous small, simple organisms called polyps that live in symbiosis with each other. The polyps produce a hard, protective skeleton of calcium carbonate that forms the structure of the coral colony. So, polyps are living creatures that make up the coral structure. Algae can also live symbiotically within the polyps and contribute to the coral's growth and survival, but they are not the same thing as the polyps themselves.