"Poriferans" is the scientific term for sponges, members of the animal phylum Porifera, which means "pore-bearer" in Greek. Sponges are the simplest animals known. Unlike all other animal phyla, which have two or three-layered body plans (diploblastic or triploblastic), sponges have only a single body layer (monoblastic), and no true tissues. They have no appendages and no ability to make any movements, lacking muscle tissues. Sponges are exclusively aquatic.
Porifera is name of phylum and animals belonging to it are called poriferans.
Sponge
Sponge
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.
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.
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
No, poriferans do not have brains or any other organs.
One piece of evidence supporting the idea that poriferans evolved from protists is the similarity in genetic sequences between certain protists and sponges. Additionally, some protists share characteristics with poriferans, such as the presence of collar cells, which suggests a possible evolutionary relationship between the two groups. Studies of early fossil records also provide some evidence of a transitional form between protists and sponges.
Phylum Porifera sponges have radial symmetry.
Poriferans, or sponges, use the flagella of their individual choanocyte cells in order to generate a current of water that brings in food, in the form of zooplankton and or phytoplankton, as well as to bring in oxygen and other dissolved nutrients, and take away carbon dioxide and other dissolved wastes.
Porifera is a group of animals that have very simple body plans. They are usually not symmetrical and live in water. They include sponges.