Porifera

Porifera

A. Characteristics
• Life in the sea water
• life lived (sessil) on the basis of the stick on the rocks, coral, sand and even mud
• The body consists of 2 cell layers, namely cells epitel on the outside of the (pinakosit) and cells in the neck in (koanosit)
• The body is equipped with a flow of water that serves as the entrance channel exit oxygen-oxygen needed by the body.
• Conditions have spikula that contain calcium, oxygen gravel, and thread yarn spon -





B. Classification porifera be based on the form and contents spikulanya
• Class Calcarea
• Class Hexactinellida
• Class Demospongia

C. Role Porifera
1. Fifty-framer
2. Bersimbiosis with the bacteria produce bioaktif that can be used for raw material medicine

Coelenterata
A. Characteristics
• Disebut also coral reefs
• Life in the sea water
• The body consists of the epidermis and gastrodermis network. Among both have mesoglea
• The form of the body are symmetrical radial
• The epidermis cells there is a wasp (knidosit)
• Having 2 types of life are: polyp and medusa

B. Classification Coelenterata
• Hydrozoa
• Scyphozoa
• Anthozoa

C. Role Coelenterata
• Source of high-protein
• Works as a protective beach
• Place of living for members of the other animals
• Place the fish find food and store eggs
• For the beauty of the sea