What is the difference between no body cavity, Flase body cavity and true body cavity..
Please be simplified....
The body of some animals is made up of three layers of cells, the outer ectoderm, the middle mesoderm and the inner endoderm. The body cavity or the coelom is the space enclosed by the mesoderm where the internal organs are suspended. Some animals do not have a true coelom but the mesoderm is present in scattered pouches. Such animals are said to be pseudocoelomic or false coelom. For example Phylum Nematoda. The animals that do not have body cavity are called acoelomate and the animals that have a true body cavity are known as coelomic or eucoelomic. For example, phylum Annelida.