1. Science:Diversity in living
organisms
Animal classification

2. Flow chart for classification of
animals

3. Porifera
•
Porifera means the organisms with holes.They are non-motile and attached
with some solid support.These holes lead to canal system that help in
circulating water throughout the body to bring in food and oxygen.They are
commonly called sponges and are mainly found in marine habitats.examplespongilla,sycon etc.

4. Cnideria
•
These are the animals which live in water.they show body
differntiation.There is cavity in the body.The body is made up of two layers
of cell: one makes up the cell on the outside body and the other makes the
inner linning of the body.example-hydra,jelly fish.

5. Platehelminthes
•
The body is bilaterally symmetrical,triploblastic and doesnot have a true
coelomic cavity.The body is flattened dorsoventrally,meaning from top to
bottom, which is why these animals are called flatworms.They are either
paprsitic or free living organisms.example-planarians,liverfluke etc.

6. Nematoda
•
The body is bilaterally symmetrical and triploblastic.the body is
cylindrical.They have no true cavity.They are familiar with parasitic worms
and cause diseases like elephantiasis or the the worms in the
intestines.some examples are:-ascaris,wuchereria.

7. Annelida
•
These animals are bilatrally symmetrical,triploblastic and have a true body
cavity.This differntiation occurs in segmented fashion,with the segments
lined up one after the other from head to tail.These animals are found in a
large varity of habitats-fresh water,marine water as well as land.Exampleleeches,earthworm.

8. ARTHROPODA
•
This is probably the largest group in animals.these are bilaterally
symmetrical,segmented.There is an open circulatory system system and
blood does not flow through defined blood vessels.They have jointed
legs.example-spiders,butterfly.

9. Mollusca
•
In the animals of this group,there is bilateral symmetry.The coelomic cavity
is reduced. There is a little segmentation.They have an open circulatory
system and kidney like organs for excreation.There is a foot that is used for
moving around.example-octopus,unio.

10. Protochordata
•
These are the animals having bilateral symmetry and have a coelom.In
addiction they have a notochord at least at some stages during their
lives.The notochord is a long rod-like support structure that runs along the
back of the animal seprating the nervous tissue from the gut.exampleHerdmania,amphioxus.

11. All types of vertebrata