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: -1. Body organs cannot move freely but are embedded in solid mesoderm tissue. 2. It is more difficult for materials to move from the gut to the body wall. A solution to both problems is to have some sort of body cavity, called a coelom, in which the body organs lie bathed in body fluid.

Detailed explanation-3: -Animals possessing such a coelom are called coelomates. Examples include the annelids, molluscs, arthropods, echinoderms, hemichordates and chordates. Q. Body cavity is the cavity present between body wall and gut wall.

Detailed explanation-4: -(zoology) Any animal possessing a fluid-filled cavity within which the digestive system is suspended.

Detailed explanation-5: -Answer and Explanation: An animal with a body cavity completely lined with mesoderm such as molluscs are: (a) coelomates. A coelom refers to the main body cavity of an organism. If the coelom is lined with cells derived from the mesoderm layer of germ tissue, that organism is referred to as a coelomate.