What are the classifications 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 4 classes of phylum Porifera?
Sponges are classified within four classes: calcareous sponges (Calcarea), glass sponges (Hexactinellida), demosponges (Demospongiae), and the recently-recognized, encrusting sponges (Homoscleromorpha).
What is the organizational grade of phylum Porifera?
Porifera: The Cells. Sponges have a cellular grade of organization. They do not possess any structures that can be considered organs.
What order is a sponge in?
Dictyoceratida
| Spongia officinalis | |
|---|---|
| Kingdom: | Animalia |
| Phylum: | Porifera |
| Class: | Demospongiae |
| Order: | Dictyoceratida |
Which are the three 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 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 basis phylum Porifera is classified into three classes?
The phylum Porifera is divided into three classes : calcarea or calcispongiae, hexactinellida or hyalospongiae and demospongiae or Sclerospongiae, on the basis of spicules (skeleton).
What are the 3 classes in phylum Porifera?
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.
What kingdom and phylum do sponges belong to?
Sponge
| Porifera Temporal range: | |
|---|---|
| Kingdom: | Animalia |
| Phylum: | Porifera Grant, 1836 |
| Type species | |
| Amphimedon queenslandica |
On which nature phylum Porifera is classified write the three classes of phylum Porifera?
There are about 5,000 living species of sponges included in this phylum Porifera. All the species of this phylum are grouped into three classes depending mainly on the nature of the skeleton. They are both marine and fresh water forms. They live up to a depth of 8,500 m in the sea.
Which is the best classification of the phylum Porifera?
Classification of Phylum Porifera. 1 Class 1: Calcarea or Calcispongiae. (calcarius: lime / calcium)) 2 Class 2: Hexactinellida or hyalospongiae: 3 Class 3: Demospongiae.
What are the diagnostic features of a Porifera?
Diagnostic Features of Phylum Porifera 3. Scheme of Classification 4. Systematic Resume. Phylum Porifera, constitute of sponges that are the most primitive of the multicellular animals, lacking organs, but having well developed connective tissue.
Who is the founder of the term Porifera?
It was Robert Grant who coined the term Porifera which in Latin means pore bearing animals (L. Porus=pore; ferre=to bear). Huxley and Sollas first proposed the separation of sponges from eumetazoans. It is believed that sponges might have evolved from the colonial choanoflagellate protozoans.
How does the phylum Porifera reproduce asexually?
They reproduce asexually by budding, and fragmentation. The nutrition is holozoic. They have neurosensory cells but are devoid of any specific nervous system. They have the power to regenerate the lost parts.