Phlyum Annelieam( Earthworms)

What trait first appeared in Phylum Annelida?

Coelom

Earthworms

Oligochaeta

Hirudenea

Leeches

What is a coelom

the main body cavity in most complex animals, surronds and contains the digestive tract and other organs

Function of coelom

circulate nutrients around the body, acts as a hydorstatic skeleton

How do earthworms breathe

thye breathe using cutaneous respiration

What is cutaneous respiration

a form of respiration in which gas exchange by moving across the skin

Leeches

segmented parasites that suck blood,

anesthetic that numbs the pain receptors,

anti-coagulants which stop blood from clothing