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Final-Kingdom animalea
In detail: Phylum Porifera and Radiata
4
Biology
Undergraduate 1
12/10/2008
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Term

 

General Observations of Kingdom Animalea

 

 

 

 

 

 

 

(4)

Definition
    
     >All Require O2
     >Multicelled Heterotrophes
     >Often pass through embryonic stages
     >Over 30 phyla
Term

 

 

General Charactaristics of Phylum Porifera

 

 

 

 

 

(10)

Definition

 >Porifera=porus+ferre=>hole bearing

 >simplist multicelled fossil(500mil years back)

 >lacks: organs,truetissue, definitenervous system,digetion

 >have freeswimming larvea

 >use collarcells to circulate H2O

 >most have spicules for protection

 >assymertical crude radial system, osmoregulation, contractile

 >indirect development, larvae doesn't resemble adult

 >habitat=all aquatic

 >size and diversity=worldwide and ranging

 

 

 

 

 

 

 

 

 

 

 
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