Which of the following possesses a hard exoskeleton formed by calcium carbonate?

Question

Which of the following possesses a hard exoskeleton formed by calcium carbonate? (A) Physalia (B) Aurelia (C) Gorallium (D) Halistemma

Tardigrade Admin · Accepted Answer

Coral animals or corals are marine, mostly colonial, polyploid coelenterate, living in a secreted calcareous skeleton (made up of textCaC textO text3 ) of their own, eg, Corallium (precious red coral) is used in jewellery, Tubipora (organ pipe coral), etc.

Q. Which of the following possesses a hard exoskeleton formed by calcium carbonate?

Physalia

Aurelia

Gorallium

Halistemma

Coral animals or corals are marine, mostly colonial, polyploid coelenterate, living in a secreted calcareous skeleton (made up of $CaC O_{3}$ ) of their own, eg, Corallium (precious red coral) is used in jewellery, Tubipora (organ pipe coral), etc.

Q. Which of the following possesses a hard exoskeleton formed by calcium carbonate?

Physalia

Aurelia

Gorallium

Halistemma

Coral animals or corals are marine, mostly colonial, polyploid coelenterate, living in a secreted calcareous skeleton (made up of CaCO3​ ) of their own, eg, Corallium (precious red coral) is used in jewellery, Tubipora (organ pipe coral), etc.

Coral animals or corals are marine, mostly colonial, polyploid coelenterate, living in a secreted calcareous skeleton (made up of $CaC O_{3}$ ) of their own, eg, Corallium (precious red coral) is used in jewellery, Tubipora (organ pipe coral), etc.