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Phylum Echinodermata
Wednesday 14 September 2016 • 00:26 • 0 comments
Phylum Echinodermata
Unique Characteristics Echinodermata
Adult:Radial symmetry
Functions:
o Locomotion
o Feeding
o Gas exchange
o Separate male and female individuals
o Release gametes into water
o Most capable of regenerating lost parts
o Holothuroids regenerate intestines and respiratory trees
o Asteroids regenerate lost arms and sucker
Roles of Echinodermata
~ Feeds on corals – threaten the coral reef
~ Secreting an enzyme that breaks down the coral tissue.
~ E.g Crown of thorns starfish
CLASS ASTEROIDEA
(Starfish, Asterias sp.)
Common Name : Starfish
Scientific Name : Asterias sp.
Phylum : Echinodermata
Class : Asteroidea
CLASS HOLOTHUROIDEA
(Sea Cucumber, Holothuria sp.)
Common Name :Sea cucumber
Scientific Name : Holothuria sp.
Phylum :Echinodermata
Class :Holothuroidea
CLASS ECHINOIDEA
(Sea Urchin, Diadema sp.)
Common Name :Sea Urchin
S Scientific Name :Diadema sp.
Phylum :Echinodermata
Class :Echinoidea
The Phylum
Phylum in Kingdom Animalia
        
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