General information


Porifera are commonly referred to as sponges. Sponges can be
found on ocean floors in most place...
Characterstics
 They have small pores called Ostia.
 They have canal system for passage of water current
 A cavity call...
Euplectelea
Porifera sponge
Sycon
Spongilla
GENERAL INFORMATION
 Coelenterata is scientifically classified from the Animalia
kingdom
and
Eumetazoa
sub-kingdom.
The
...
Characterstics
 Dipoblastic body with two layers of cells, outer layer called ectoderm





or epidermis and the ...
Acropora palmata
(Elkhorn coral)
Distichopora violacea
Aurelia aurita (Jelly fish)
hydra

A phylum of the invertebrates, commonly called the flatworms.
They are bilaterally symmetrical, nonsegmented, dorsovent...
Characterstics






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Body of animals of this group is bilaterally
symmetrical, i.e. the left and the right hal...
SOME EXAMPLES
Fasciola hepatica
Echinostoma
revolutum
Tricladida
Entobdella soleae
1)
They have small
pores called Ostia
They have only two
germs layer, i.e. they
are dipoblastic
They are triploblastic,...
porifera,ceolenterata,platyhelminthes
porifera,ceolenterata,platyhelminthes
porifera,ceolenterata,platyhelminthes
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porifera,ceolenterata,platyhelminthes

It tells about the phylum porifera, ceolenerata, pltyhelminthes.......................................................................................................................!!!!!!!!!!!!!!!!!!!!!!!!!!
Published on: Mar 4, 2016
Published in: Education      Technology      Lifestyle      
Source: www.slideshare.net


Transcripts - porifera,ceolenterata,platyhelminthes

  • 1. General information   Porifera are commonly referred to as sponges. Sponges can be found on ocean floors in most places around the world. In all cases, poriferans have a canal system, through which they pump water. Water enters through pores called Ostia, flows through canals to a spacious chamber called a spongocoel, and finally exits through large openings called oscula.
  • 2. Characterstics  They have small pores called Ostia.  They have canal system for passage of water current  A cavity called spongocoel is present, therefore they are called sponges  They are covered with the hard covering or outer skeleton.  Digestion is intracellular that is within the cell  Respiration and excretion takes place through the general body surface.  Reproduction takes place asexually as well as sexually  They are non motile animals attached to some solid support  The body design involves very minimal differentiation and division into tissues.  Mostly found in seas, but a few species are found in fresh water also.
  • 3. Euplectelea Porifera sponge Sycon Spongilla
  • 4. GENERAL INFORMATION  Coelenterata is scientifically classified from the Animalia kingdom and Eumetazoa sub-kingdom. The term Coelenterata is no longer recognized as scientifically valid, as the Cnidaria and Ctenophora.  This phylum includes about 9000 species , which are mainly marine ; few are fresh water . The name of this phylum came from the stinging cells or cnidoblasts present on the ectoderm of tentacles and the body of these carnivorous animals. This phylum includes aquatic (marine and fresh water), solitary or colonial forms.
  • 5. Characterstics  Dipoblastic body with two layers of cells, outer layer called ectoderm      or epidermis and the inner layer known as the endoderm or gastrodermis. The body is made up of two layers of the cells , one makes up cells on the outside of the body , and the other makes the species live in colonies like corals , while others have a solitary life-span like hydra . Jellyfish and sea anemone are common examples They have a central cavity called coelenteron in their body which is also known as gastrovascular cavity These animals are aquatic and mostly marine except hydra which found in fresh water They have only one opening in their body which is used for feeding and for elimination of waste material Digestion is both intracellular and intercellular
  • 6. Acropora palmata (Elkhorn coral) Distichopora violacea Aurelia aurita (Jelly fish) hydra
  • 7.  A phylum of the invertebrates, commonly called the flatworms. They are bilaterally symmetrical, nonsegmented, dorsoventrally flattened worms characterized by lack of coelom, anus, circulatory and respiratory systems, and exoor endoskeleton. Three classes occur in the phylum: (1) the Turbellaria, mainly freeliving, predacious worms; (2) the Trematoda, or flukes, holozoic ectoor endoparasites; and (3) the Cestoda, or tapeworms, saprozoic endoparasites in the enteron of vertebrates, whose larvae are found in the tissues of invertebrates or vertebrates. General information
  • 8. Characterstics        Body of animals of this group is bilaterally symmetrical, i.e. the left and the right halves of the body have the same design They are triploblastic, i.e. there are three layers of cells, from which diffferentiated tissues can be made They have organ lable of organisation There is no true internal body cavity or coelom, in which well developed organs can be accomodated The body is dorsoventrally flattened They are either freeliving, or parastic Free living-planarians
  • 9. SOME EXAMPLES Fasciola hepatica Echinostoma revolutum Tricladida Entobdella soleae
  • 10. 1) They have small pores called Ostia They have only two germs layer, i.e. they are dipoblastic They are triploblastic, i.e. there are three layers of the cells 2) They possess cellular level of organization They possess tissue level organization. They possess organ level of organization 3) The body cavity is called spongocoel The body cavity is called coelenteron There is no true internal cavity i.e. pseudocoelenteron 4) Digestion is intracellular Digestion is both extracellular and intracellular They have incomplete digestive system 5) They are asymmetrical or radially symmetrical They are radially symmetrical . They are bilaterally symmetrical 6) Ex- Sycon , Spongilla Ex- Hydra, Aurelia(jellyfish) Ex- Taenia , Planaria