Question

describe group of animals having pseudocoelom and give an example

Answer 1

The Phylum containing such organisms have organ system grade of body organisation , symmetry found in them is bilateral and phylum Aschelminthes consists of organisms which have pseudocoelom .

Example are ascaris ,wuchereria ,ancylostoma.

These organisms may be free living, aquatic and terrestrial or they may be parasitic in plants or animals. Segmentation is absent in them. Digestive system is complete but circulatory and respiratory system are absent.

Answer 2

The animals which have pseudocoelom are Rotifers, Nematodes and Roundworms.

EXPLANATION:

The pseudocoelomate is an organism which has body cavity. This cavity is not found from the mesoderm but has a true coelom or body cavity.The pseudocoelomate is also called the blastocoelomate as this is also derieved from the cavity inside the embryo or blastocoels.

In the pseudocoelomate group, the body fluid bath the internal organ of the body and the nutrients or water are received from the body fluid in the cavity.