EVERYDAY SCIENCE

Detailed explanation-1: -Coelomate animals or Coelomata (also known as eucoelomates – “true coelom") have a body cavity called a coelom with a complete lining called peritoneum derived from mesoderm (one of the three primary tissue layers).

Detailed explanation-2: -A true coelom is lined on all sides by mesoderm which gives rise to muscles that surround the gut as well as underlying the body wall. This allows more efficient digestion because food can be pushed through the digestive tract by muscles.

Detailed explanation-3: -What is a coelom? A body cavity that is completely surrounded by mesodermal tissue. A coelom is not open to the outside of the animal.

Detailed explanation-4: -The true coelom is a body cavity formed during embryo development from the three germinal layers. The body cavity meaning a fluid filled space that can accomodate organs. The coelom is lined by mesodermal epithelium cells. Presence or absence of coelom is one of the criteria for classifying animals.

Detailed explanation-5: -A “true” coelom is completely surrounded by mesodermal tissue, and can thus be subdivided into compartments. Animals with a true coelom are known as eucoelomates or simply coelomates.