ANELIDA

ANNELIDA:
Dring my investigation I discover a web page that explain very well about this specie. (the web page is below).

http://www.earthlife.net/inverts/annelida.html

ECHINODERMATA

The echinoderms are an edge of animals deuteróstomos exclusively marine and bentónicos. His name alludes to his exclusive internal skeleton formed for osículos calcareous. They possess symmetry pentarradial secondary, the only case in the animal kingdom, and a vascular aquiferous typical system.

tolweb.org/Echinodermata

REPTILES

The reptiles are animal vertebrates. It thinks that it does approximately 310 million years they descended from the amphibians. With the course of the time the mammals and the birds arose from the reptiles.
Seven thousand species of reptiles that live nowadays qualify in four basic groups. These groups are: Crocodiles -Lizards and Serpents -Tortoises -Tuátaras.

www.damisela.com/zoo/rep/index.htm

PLATYHELMINTHES

PLATYHELMINTHES

This speimen is characteristic by:

have a flattened, bilaterally symmetrical body. They have three embryonic layers (triploblastic): the endoderm, the mesoderm, and the ectoderm. this specie is more none as flat worms have no other body cavity than the digestive cavity (acoelomates).

For more information wacht this web side and
http://library.thinkquest.org/28751/review/animals/3.htmlhttp://www.ucmp.berkeley.edu/platyhelminthes/platyhelminthes.html

AMPHIBIANS

Amphibians, such as frogs, toads, salamanders, newts, are ectothermic or cold-blooded animals that metamorphose from a juvenile water-breathing form, to an adult air-breathing form.

CNIDARIA

Cnidaria is a phylum containing over 9,000 species of animals found exclusively in aquatic, mostly marine, environments. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick.

FISH

A fish is any aquatic vertebrate animal that is typically ectodermic, covered with scales, and equipped with two sets of paired fins and several unpaired fins.