Question

Poriferas are:

• A. Acoelomate
• B. Pseudocoelomate
• C. Schizocoelomate
• D. Enterocoelomate

Answer 1

The correct option is A Acoelomate

A. In acoelomate animals, there is no body cavity. The region between the ectodermal epidermis and the endodermal digestive tract is completely filled with mesoderm is the in the form of a spongy mass of space filling cells called parenchyma. For example, Phylum Porifera, Coelenterata, Ctenophora and Platyhelminthes.

B. In pseudocoelomate animals, a false coelom or perivisceral cavity is present. For example, Phylum Aschelminthes and Nematoda.

C. In schizocoelomate animals, coelom develops as a split in the mesoderm sheet. For example, Phylum Annelida and Arthropoda.

D. In enterocoelomate animals, coelom is formed from the pouches of the archenteron.

Hence, porifers are acoelomate. So, the correct answer is 'Acoelomate'.