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Do cnidarians have spicules?
Cnidarians do not have spicules. Spicules are commonly found in sponges and it is a simply a skeleton which has very tiny splinters that look like needles.
What type of animal has a collar cells an osculum and spicules?
Sponges have collar cells, osculum, and spicules.
A special kind of cell that builds spicules?
it is scleroblast cells which produce spicules which are modified amoebocytes
What kind of animals have collar cells an osculum an spicules?
Sponges have collar cells, osculum, and spicules.
What is the purpose of the earth's mantle?
Beside comprising the majority of the mass of the Earth, the mantle acts as a conduit of heat from the interior of the planet to the surface, and is part of the rock recycling machine known as the rock cycle.
What is a calcisponge?
A calcisponge is any of a group of marine sponges containing calcareous spicules - spicules which resemble calcium carbonate.
What is a calcareous sponge?
A calcareous sponge is any of a variety of sponge of the class Calcarea, with skeletons composed of spicules of calcium carbonate.
What is the main difference between the classes Hexactinellida Calcarea and Demospongiae?
In calcarea spicules are calcareous, in hexactinellida spicules are silicious and hexa radiated, in demospongiae spicules are absent but spongin fibres are present. that's why demosponges are used as bathroom sponges
What is the function of spicules?
Spicules provide support to the sponge. In fact, a spicule is defined as any (of various shapes and sizes, depending of the sponge) small calcareous or siliceous body embedded along the sponge's cells.
What sponges have a skeleton?
Sponges don't have skeletons! They are invertebrates which means the creature doesn't have a backbone, but in this case, it doesn't have a skeleton! (I think this is right, I apologize if it isn't)
What is sponge?
Any of numerous aquatic, chiefly marine invertebrate animals of the phylum Porifera, characteristically having a porous skeleton composed of fibrous material or siliceous or calcareous spicules and often forming irregularly shaped colonies attached to an underwater surface.
What is Porifera made up of?
They are supported by a skeleton made up of the protein collagen and spicules, which may be calcareous or siliceous, depending on the group of sponges examined. Skeletal elements, choanocytes, and other cells are imbedded in a gelatinous matrix called mesohyl or mesoglea
What are the functions of spicules in sponges?
Spicules provide structural support.
What are the adaptation of calcareous algae?
calcareous alge adaptations
What is a scientific name for Calcareous algae?
calcareous algae
What organisms are found in porifera?
Porifera are sea sponges. They have no symmetry (asymmetrical) and they are one of the most basic forms of life. They have a 2 cell layer wall made of collar cells, spicules, amoeba like cells, and a layer of epidermal like cells. The spicules and the amoeba like cells are in between the layer of collar cells and epidermal cells. Sponges also have pores throughout their structure. Porifera include freshwater sponges as well of marine varieties. Freshwater sponges are common although not obvious. Frequently they are green in color due to included algae.
What is the role of spicules sponges?
Spicules, like our skeleton, give the sponge structure. Without spicules, Sponge Bob would be Sponge Blob.
