NEET BIOLOGY

Detailed explanation-1: -Answer and Explanation: The fluid-filled space separating the outer body wall from the digestive system is called the coelom. It helps in lubricating the tissues and transporting nutrients between the surfaces. It is primarily seen in invertebrates as pseudocoelom.

Detailed explanation-2: -Some species possess a pseudocoel, a fluid-filled body cavity between the digestive tract and the body wall.

Detailed explanation-3: -coelom. noun. coe·lom ˈsē-ləm. plural coeloms also coelomata si-ˈlō-mət-ə : the usually epithelium-lined body cavity of metazoans above the lower worms that forms a large space when well developed between the digestive tract and the body wall.

Detailed explanation-4: -“The coelom is the fluid-filled body cavity present between the alimentary canal and the body wall.” The true coelom has a mesodermal origin. It is lined by mesoderm. The peritoneal cavity present in the abdomen and similar spaces around other organs such as lungs, heart are parts of the coelom.

Detailed explanation-5: -There are three such categories divided on the basis of the presence or absence of coelom. They are acoelomate, pseudocoelomate and coelomate.