WebJun 8, 2024 · spicule A small needle or spine, or a small, spiky, skeletal element. In Porifera (sponges), spicules form a skeletal framework supporting the soft, cellular mass. They … WebSponges in the Class Hexactinellida are commonly called glass sponges because their six-rayed spicules are made silica. Often the spicules are cemented together into a roughly cylindrical skeleton 10-30 cm tall. All species are marine, living mostly in deep ocean waters.
Animal bio EXAM #2 Flashcards Chegg.com
WebSpongin fibers are found in common bath sponges. Phylum Porifera Granita spicules. Phylum Porifera Spongin fibers.. They could also appear like this. Phylum and genus? What is this made of ? Phylum Porifera Genus Euplectella (glass sponge) It is made of silicon spicules. Phylum Cnidaria Web(ii) Spicules are of monaxonial megascleres. (iii) Spongin may or may not be present. It includes four orders: Order 1. Hadromerina or Astromonaxonellida: Features: (i) Megascleres are mostly tylostyles, i.e., broad end is knobbed. (ii) Microscleres are usually wanting; when present, they are in the form of a star. (iii) Spongin is absent. ctfax reviews
Sponges: Description and Structure Phylum Porifera
WebThe phylum Porifera comprises the sponges. Sponges are simple invertebrate animals that live in aquatic habitats. Although the majority of sponges are marine, some species live in … WebMay 29, 2024 · Answer: Spongin and sponge spicules are the skeletal structures of the sponge body. Like all skeletons, they support the soft tissues of the body. The sharp spicules and the softer spongin are arranged in a complex three-dimensional latticework that holds up the cells and gives the sponge its shape. What is the function of spongin? WebSpicules may be bound together by spongin, or spongin may be absent. All are leuconoid, most are marine. One Demosponge family of sponges, the Cladorhizidae, are carnivorous. They capture small crustaceans with filaments which stick to their shells like Velcro. Their cells then migrate around the prisoner and digest it. ctfax review