(from the article `animal`) Flatworms (phyla Platyhelminthes, Nemertea, and Mesozoa) lack a coelom, although nemerteans have a fluid-filled cavity at their anterior, or head, ... ...to these problems; most but not all involve the development of a circulatory system: as described above, sponges and cnidarians permit all cells ... [2 r...
Found on
http://www.britannica.com/eb/a-z/a/12
<organism> A triploblastic organism which does not have an internal body cavity other than the gut. The area between the gut and the organisms outer body wall is completely filled with tissue derived from the mesoderm. The term is used to classify multicellular animals by developmental pattern. ... (09 Oct 1997) ...
Found on
http://www.encyclo.co.uk/local/20973
(a-se´lә-māt) without a coelom or body cavity. an acoelomate animal.
Found on
http://www.encyclo.co.uk/local/21001
Animal without a coelom. The Acoelomate Phyla include sponges, coelenterates and lower worms such as nematodes and platyhelminths.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
No exact match found.
