Annelida are organisms that their bodies are segmented in a way that each segment has a different role on the body. These segments are formed by subdivisions that transect the body cavity. This allows these organisms to move by contracting their muscles and expanding their muscles. Have you ever seen an earthworm? If you were to watch it carefully you can see the body contract as it moves and this allows you to see each segment on an annelid. These segments all have similar jobs including supporting the body. Annelida include earthworms and even leeches and ragworms.
The skeletal system of an annelid isn't really a skeletal system. Annelida do not have skeletal systems instead most of these segmented worms support their body using liquids in their bodies to create pressure so that the annelid doesn't collapse. In a way this is like a skeletal system because it helps support an Annelid's body.
Annelida can be either land or marine animals depending on what animal it is. An example of a marine annelida is the rag worm and an example of a land annelida is the earthworm. These species vary greatly.
The skeletal system of an annelid isn't really a skeletal system. Annelida do not have skeletal systems instead most of these segmented worms support their body using liquids in their bodies to create pressure so that the annelid doesn't collapse. In a way this is like a skeletal system because it helps support an Annelid's body.
Annelida can be either land or marine animals depending on what animal it is. An example of a marine annelida is the rag worm and an example of a land annelida is the earthworm. These species vary greatly.