Tag: nephridia

Feature Urochordates Cephalochordates Examples Ascidia, Salpa, Doliolum Amphioxus (Branchiostoma) Adult Sedentary Free swimming Segmentation Absent Present Notochord Absent in adult Present Nerve Cord Absent in adult Present Coelom Absent Present…

Mostly aquatic, some terrestrial. Burrowing and tubicolous, Some are commensal and parasitic.Body elongated and bilaterally symmetrical. Triploblastic. True coelom.Metamerically segmented into similar metameres.Epidermis made from a single layer of columnar…