What are the classification of phylum Porifera?
The phylum Porifera has four classes, namely the Calcarea, Demospongiae, Hexactinellida and Homoscleromorpha. Exclusively marine, calcareous sponges predominantly inhabit shallow tropical waters.
What is the order of a Porifera?
The phylum Porifera contains predominantly marine sponges; it is only in the suborder Spongillina within the order Haplosclerida that the freshwater species are found.
What are the 3 classes of the phylum Porifera describe them?
The three classes are: 1. Calcarea or Calcispongiae— (Calcareous Sponges) 2. Hexactinellida or Triaxonida or Hyalospongiae—(Glass Sponge) 3. Demospongiae.
What order is a sponge?
Integrated Taxonomic Information System – Report
| Phylum | Porifera Grant, 1836 – sponges, éponges, esponja, porifero |
| Class | Demospongiae Sollas, 1885 |
| Order | Dictyoceratida Minchin, 1900 |
| Family | Spongiidae Gray, 1867 |
| Genus | Spongia Linnaeus, 1759 |
What is the classification of a sponge?
Porifera
Sponge/Scientific names
The approximately 8,550 living sponge species are scientifically classified in the phylum Porifera, which is comprised of four distinct classes: the Demospongiae (the most diverse, containing 90 percent of all living sponges), Hexactinellida (the rare glass sponges), Calcarea (calcareous sponges), and Homoscleromorpha …
On which basic phylum Porifera is classified?
Phylum porifera is classified mainly basing on skeleton. It is divided into 3 classes. sponges spicules plays a very important role in classification of porifera.
What order do sponges belong to?
Phylum Porifera All recent freshwater sponges belong to the suborder Spongillina of the order Haplosclerida (Demospongiae) currently divided into six families, 47 genera, and 238 species (Manconi and Pronzato, 2002, 2007, 2008, 2011; Van Soest et al., 2012).
What are the main characteristics of phylum Porifera?
Characteristics of Phylum Porifera
- The cells of Poriferans are loosely organized.
- They are mostly found in marine water.
- They are either radially symmetrical or asymmetrical.
- Their body is usually cylindrical.
- The scleroblast secretes spicules while spongin fibres are secreted by spongioblasts.
What order is a sponge in?
| Class | Order | Family |
|---|---|---|
| Demospongiae | Dictyoceratida | Dysideidae |
| Demospongiae | Dictyoceratida | Dysideidae |
| Demospongiae | Dictyoceratida | Dysideidae |
| Demospongiae | Dictyoceratida | Dysideidae |
Why Porifera phylum is kept under the separate phylum?
Based on the embryological studies, sponges are proved as animals and are classified into a separate Phylum in animals. This phylum includes about 5000 species. The poriferans have a spongy appearance and are therefore called sponges. They are attached to the substratum and do not move.
How do you classify a Porifera fossil?
To be classified as a sponge, an organism must have spicules, which are needle-like secretions of calcium carbonate or silica. Spicules are classified based on their structural characteristics and size. Megascleres are large, whereas microscleres are small.
What are the major classes of Porifera phyla?
The following points highlight the three main classes of Phylum Porifera. The three classes are: 1. Calcarea or Calcispongiae – (Calcareous Sponges) 2. Hexactinellida or Triaxonida or Hyalospongiae-(Glass Sponge) 3. Demospongiae.
What are the classes found in the Porifera?
The phylum porifera has three classes which are calcarea, hyalospongiae and demospongiae. The calcarea are also known as lime sponge. They have spicules which are calcareous in nature.
How many species are classified as Porifera?
The approximately 5,000 living sponge species are classified in the phylum Porifera, which is composed of three distinct groups, the Hexactinellida (glass sponges), the Demospongia, and the Calcarea (calcareous sponges).
How many species belong to the phylum Porifera?
The phylum Porifera, which means “pore bearing,” consists of three classes of sponges, which together contain more than 5,000 species.