Give any four characteristics of hemichordate.
The four characteristics of hemichordate are: - (i) These are worm-like marine animals that have an organ-system level of organization. (ii) Their body is bilaterally symmetrical, triploblastic and coelomate (having true coelom). (iii) The body is cylindrical and is divided into anterior proboscis, collar and a long trunk. (iv) Respiration occurs through gills.
