Question

explain the psuedocoelomate

Answer 1

Hi mate ....
Psuedocoelomate means that organisms which have false coelom or bodies ....
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Answer 2

A pseudocoelomate is an organism with body cavity that is not derived from the mesoderm, as in a true coelom, or body cavity. A pseudocoelomate is also known as a blastocoelomate, as the body cavity is derived from the blastocoel, or cavity within the embryo. A true coelom is lined with a peritoneum which serves to separate the fluid from the body cavity. In a pseudocoelomate, the body fluids bath the organs, and receive their nutrients and oxygen from the fluid in the cavity.

The presence of the blastocoel in the embryo is a condition universal to all metazoan. In most metazoans, the mesoderm becomes the lining of the body cavity, creating the true coelom. Some pseudocoelomates represent the primitive form of coelomates, and their ancestors never had a true coelom. Other organisms have lost the peritoneum and have regressed to the pseudocoelomate condition. The larval form of some coelomates start as pseudocoelomates. A pseudocoelomate is often a small animal, which relies mostly on diffusion to distribute oxygen and nutrients to its cells. These organisms typically have no circulatory system, or an open circulatory system which circulates a blood-like substance known as hemolymph within the body cavities of these animals. Because of this, the cavity is referred to as the hemocoel and the organism as a hemocoelomate.


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