Sponge - Wikipedia
Sponges constitute the phylum Porifera, and have been defined as sessile metazoans (multicelled immobile animals) that have water intake and outlet openings connected by chambers lined with choanocytes, cells with whip-like flagella.
Phylum Porifera- Characteristics & Examples Of Phylum Porifera
Phylum Porifera are the lowest multicellular animals belonging to the kingdom Animalia. The word “Porifera” mainly refers to the pore bearers or pore bearing species. Based on the embryological studies, sponges are proved as animals and are classified into a separate Phylum in animals.
Sponge | Definition, Features, Reproduction, & Facts | Britannica
Nov 5, 2024 · sponge, any of the primitive multicellular aquatic animals that constitute the phylum Porifera. They number approximately 5,000 described species and inhabit all seas, where they occur attached to surfaces from the intertidal zone to depths of …
5.1: Phylum Porifera - Biology LibreTexts
Aug 24, 2022 · They are sessile organisms, attached to reef surfaces via a holdfast. They get their food through filter feeding when the ocean currents go through their pores. There are 4 different classes of sponges; Calcarea (calcareous- has spicules*), Hexactinellida (horn sponges), Demospongiae (coralline), and Sclerospongiae (glass sponges).
Porifera - Animalia
Porifera. <p><b>Sponges</b> (also known as <b>sea sponges</b>), the members of the phylum <b>Porifera</b> (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts.
Phylum Porifera- Characteristics, classification, examples
Aug 3, 2023 · Phylum Porifera Characteristics. Porifera are all aquatic, mostly marine except one family Spongillidae which lives in freshwater. They are sessile and sedentary and grow like plants. The body shape is vase or cylinder-like, asymmetrical, or radially symmetrical.
Porifera : Characteristics and Classification - Biology Educare
Jul 22, 2022 · The term ‘Porifera’ is derived from two Latin words ‘Porus’ meaning pores and ‘Ferre’ meaning bear. They are predominantly marine organisms which inhabit in the intertidal to the deepest ocean zone. There are about 8500 described living species under the phylum Porifera worldwide.
28.1A: Phylum Porifera - Biology LibreTexts
Oct 31, 2023 · Phylum Porifera (“pori” = pores, “fera” = bearers) are popularly known as sponges. Sponge larvae are able to swim; however, adults are non-motile and spend their life attached to a substratum through a holdfast.
28.1 Phylum Porifera - Biology 2e - OpenStax
Scattered among the pinacoderm are the ostia that allow entry of water into the body of the sponge. These pores have given the sponges their phylum name Porifera—pore-bearers. In some sponges, ostia are formed by porocytes, single tube-shaped cells that act as valves to regulate the flow of water into the spongocoel. In other sponges, ostia ...
28.1: Phylum Porifera - Biology LibreTexts
Explain the various body forms and bodily functions of sponges. The invertebrates, or invertebrata, are animals that do not contain bony structures, such as the cranium and vertebrae. The simplest of all the invertebrates are the Parazoans, which include only the phylum Porifera: the sponges (Figure 28.1.1 28.1. 1).