What is true about corals *?

Coral is the name loosely given to a variety of animals which grow in colonies made of calcium carbonate. The typical coral is a colony of numerous polyps, tiny individuals that secrete a delicate skeleton of lime and protein. … Polyps feed by extending their tentacles in search of prey.

Which of the following is not true about corals?

Though there is evidence for coral bleaching in the Red Sea, still most of the coral reefs are found in a healthy condition in the Red Sea. So, Option 4 is NOT correct. Corals are mainly found in the tropical oceans. Coral reefs can be found in both shallow and deep waters.

Which of the following best describes corals ‘?

Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton.

What are characteristics of corals?

  • Body Shape. A coral polyp is a tubular sac-like animal with a central mouth surrounded by a ring of tentacles. …
  • Size. Depending on the species, coral polyps may measure less than an inch to several inches in diameter (a few millimeters to several centimeters). …
  • Color. …
  • Tentacles.