Question

why are poriferans also called sedentary animals​

Answer 1

Answer:

They are sessile and sedentary animals because of- Body either asymmetrical or some radially symmetrical in adult stage, Multicellular organisms having cellu­lar grade of organization without true tissues, Body is perforated by numerous, minute inhalent pores—the ostia for ingress of water, hence the name of the group is called Porifera.