Answer:
These are triploblastic, cylindrical worms having pseudocoelom
(no true coelom). Their body is bilaterally symmetrical.
These free living animals live in soil or water, most of others
are parasitic (produce disease in the host)
having organ system level of organisation and elastic cuticle on the
outside surface. These are called roundworms because they appear circular in cross-section
and are un segmented. They have tissues but no real organ is present.
You need to login to perform this action.
You will be redirected in
3 sec
