What is the structure of phylum Porifera?
Many sponges have internal skeletons of spongin and/or spicules of calcium carbonate or silica. Primarily, their body consists of a thin sheet of cells over a frame (skeleton). As their name suggests, Poriferans are characterized by the presence of minute pores called ostia on their body.
What is classified in phylum Porifera?
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. Class: Calcarea. Class: Hexactinellida.
What is the order of Porifera?
Phylum: Porifera.
What level of organization are sponges?
cellular-level organization
Sponges have cellular-level organization, meaning that that their cells are specialized so that different cells perform different functions, but similar cells are not organized into tissues and bodies are a sort of loose aggregation of different kinds of cells.
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.
Which of the following is a member of phylum Porifera?
sycon,Leucosolenia & Spongilla belongs to same phylum that is phylum Porifera!!
What is the special feature of phylum Porifera?
Characteristic Features of Phylum Porifera They are generally marine aquatic organisms, with a few freshwater species. Their bodies are asymmetrical. Body shape can be cylindrical, vase-like, rounded or sac-like. They are diploblastic animals with two layers, the outer dermal layer and the inner gastral layer.
What are the main characteristics of phylum Porifera?
This phylum includes about 5000 species. Poriferans are pore-bearing first multicellular animals….Frequently Asked Questions
- These are pore-bearing multicellular animals.
- The body has no organs.
- They exhibit holozoic nutrition.
- The body is radially symmetrical.
- They can regenerate their lost parts.
What are the four levels of organization in an animal?
Zoology 4: Levels of Animal Organization Protoplasmic Cellular Tissue
What are the unique features of Porifera?
Characteristic Features of Phylum Porifera. They are generally marine aquatic organisms, with a few freshwater species. Their bodies are asymmetrical. Body shape can be cylindrical, vase-like, rounded or sac-like.
What is the importance of Porifera?
Phylum Porifera, or the sponge, is entirely aquatic, Sponge reefs serve an important ecological function as habitat, and can be used as an indicator of sponge reef health.
What are the types of 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).