What organisms are found in Phylum Porifera? Porifera are sea sponges. They have no symmetry (asymmetrical) and they are one of the most basic forms of life.
The phylum Porifera includes all species of sponges, encompassing about 5,000 ... they are not made up of true tissue and so cannot exhibit true symmetry. ... Sponges are generally marine animals, and are found throughout the world, ...
Get information, facts, and pictures about Porifera at Encyclopedia.com. ... animal phylum consisting of the organisms commonly called sponges. ... Sponges lack organs and tissue, and all the cells exhibit considerable independence. .... Most species are marine and can be found in all the oceans; only 3 percent live in fresh ...
Phylum: Porifera (sponges) ... The Porifera (sponges) differ from other animals in that they do not exhibit true tissue ... The class Hexactinellida or glass sponges, primarily found in deep marine habitats, possesses spicules composed of silica.
Explain the position of the phylum Porifera in the phylogenetic tree of invertebrates ... The great majority of the marine species can be found in ocean habitats ranging ... However, sponges exhibit a range of diversity in body forms, including ...
Description, classification, synonyms of Phylum Porifera - Sponges.
The phylum Porifera, which means "pore bearing," consists of three classes of ... are found within the class Demosponge, which alone contains 4,750 species.
Animals originated in the oceans of the Precambrian era about 1.5 billion years ago. The first animals were multicellular, eukaryotic and heterotrophic.
There are about 5000 to 10,000 of species of Porifera that are known today. ... Common Name: Sponges; Kingdom: Animalia; Phylum: Porifera; Classes: Calcarea, ... Most are sponges are asymmetrical, though some of them exhibit radial ...