Question

Enumerate the general characteristics of vertebrates used and the distinguishing classes

under it. Give reasons as to why cephalochordates and urochordates are classified as

chordates.​

Answer 1

Answer:

Vertebrates are members of the subphylum Vertebrata, under the phylum Chordata and under the kingdom Animalia . Animals that possess bilateral symmetry can be divided into two groups, protostomes and deuterostomes, based on their patterns of embryonic development. The deuterostomes, whose name translates as "second mouth," consist of two phyla: Chordata and Echinodermata. Echinoderms are invertebrate marine animals that have pentaradial symmetry and a spiny body covering; the phylum includes sea stars, sea urchins, and sea cucumbers. The phylum Chordata contains two groups of invertebrate chordates, but the most conspicuous and familiar members of Chordata are the vertebrates.