Question

what is meant by pseudocoelomates?

Answer 1

Hello,

Coelom is the body cavity which is lined by the mezodermal cells

The organisms which have a sort of body cavity which supports organs but the cavity is not lined by the mezodermal cells are known as pseudocoelomates.
The phylum which are pseudocoelomates are platyhelminthes and nematoda.

The organisms which have the body cavity lined by mezodermal cells are known as coelomates.

The organisms which do not have any body cavity are known as acoelomates.

There are certain organisms whose coelom is filled with blood. These kind of cavity is known as haemocoel.

Hope this will be helping you ✌️

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.

e.g. - Rotifers ,nematodes etc


Hope it helps