In addition, animals are capable of locomotion or body movement by means of contractile ... Primitive phylawithout a true coelom include the Porifera and ...They have the organ level of organization and are bilaterally symmetrical. ...
They attach themselves to a rock and don't move.
they dont move, they are sessile
with their eyes!
somewhere
Porifera is name of phylum and animals belonging to it are called poriferans.
Poriferans (sponges) lack many common characteristics of animals such as a head or a mouth. Typically poriferans do not have eyes, ears, as well as other sense organs. Poriferans do not possess major organs such as heart, stomach, muscles, or even a nervous system.
Sponge
Sponge
All poriferans and coelenterates live in water, most of them in sea water, but some in fresh water. Poriferans are bottom-dwellers. Coelenterates can be free-swimming, fixed to the bottom or live in colonies fixed to the bottom, depending on species and face of life.
Poriferans needs organic substances and cnidarians needs of a gastrovascular cavity with openings.
well defined true tissue level of organization first to move having primitive muscles and nerves, becomes first active predator
No, poriferans do not have brains or any other organs.
protozoans are tiny,single celld organism. they are very small and it can be only seen trhough a microscope. poriferans are the simplest of the many celled animals their bodies are made up of hollow tubes with pores or openings on the side
Shoko
An animal derived from only two germ layers are called diploblastic animals. Eg: Poriferans, Coelenterates.
Phylum Porifera sponges have radial symmetry.