Question

In general animals are identified as being multicellular, heterotrophic by digestion and reproducing sexually.

Within the Kingdom Animalia we use different features to classify organisms.

One of the main criteria we use in classifying animals is their coelum or body cavity.

What is the purpose of a coelum and why is it so important?

Explain the difference between an Acoelomate, Pseudocoelomate and Coelomate animals.

Give examples of each.

Thanks in advance!