Biology 3229F/G Lecture Notes - Lecture 2: Nematode, Invertebrate
11 Apr 2018
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Document Summary
A pseudocoelomate is a an invertebrate with a three-layered body, which has a body cavity filled with fluid between the mesoderm and endoderm, rather than a true coelem. The hydrostatic pressure of the pseudocoelem gives its body a supportive framework, acting like a skeleton. Examples of pseudocoelomate include nematodes: briefly explain the differences between pseudocoelmates, coelomates and acoelmates. Acoelomates lack a coelom, meaning they do not have a true body cavity and instead is filled with cells. Pseudocoelomates acquires the beginning parts of a body cavity, however lacks mesentery. Coelomates have a true body cavity (coelem) and their organs are in a peritoneal membrane.
