Question

What is ceolem state it's significance

Answer 1

Coelom is defined as the body cavity in the body of living organisms.

Arthropods are haemocols which means that there body cavity is filled of blood.

In such condition, the body doesn't has a proper network of arteries and veins thus, these organisms have a open circulatory system.

Their coelom is haemocol i.e filled with blood.

Answer 2

Body cavity which is lined by mesoderm is called coelom. It is the cavity between body wall and gut . It's function is to protect internal organs from shock . Animals possessing coelom are called Coelomates ex annelids,molluscs, arthropods, echinoderms, hemichordate,chordates. In some animals the body cavity is not lined by mesoderm , instead of mesoderm there are scattered pouches between ectoderm and endpderm such body cavity is called pseudocoelom and animals possessing them are called pseudocoelomates ex aschelminthes.