The Chordata Phylum comprises triblastic, hairy and deuterostomy individuals. They have closed circulation, complete digestive tract; single, dorsal and hollow nervous tube and pharyngeal slits. They may present bilateral symmetry, skull and endoskeleton. As an example of members of this phylum, we can mention Birds, Reptila, Osteichythyes and Amphiba.
Cephalopods belong to the Mollusca phylum they are animals that have feet (can) on the head (cephalus). Octopus and squid are part of this class (Cephalopoda) of mollusks. All animals in this class are marine predators.
Vascular Tissues consist of long, narrow cells arranged end-to-end, forming tubes. There are two different types of vascular tissues, called xylem and phloem. Xylem is vascular tissue that transports water and dissolved minerals from roots to stems and leaves.
