A roundworm has bilateral symmetry
A roundworm has three germ layers.
A roundworm has cephalization
Roundworms have a body cavity
Level of Organization
Bilateral symmetry, organ-level of organization, true coelom or pseudocoel
A roundworm has two nerve cords that transmit impulses in its body
Roundworms have no heart or formal blood vessels
They do not have a formal respiratory system
Roundworms have an anus at its rear end and a series of excretoy tubes that end in an excretory pore
A roundworm reproduces sexually. The female has an ovary, holds eggs in an oviduct and then passes them to the uterus, where they are fertilized. The male has sperm cells are made in the testis and stored in the vas deferens. When it is time to reproduce, the sperm cells pass through the spicule. Over 200,000 eggs can be deposited at once in the soil once they are fertilized.
Roundworms dont have a skeleton