ANIMAL KINGDOM FLASH CARDS

Porifera: They have pores(ostia) ,Central body cavity spongocoel ,Water going out through osculum Some live in fresh water or the ocean -Non-motile, -Asymmetrical -Diploblastic containing 2 germ layers: endoderm and ectoderm -Have collar cells (choanocytes) -Reproduce sexually and asexually ,hermaphrodite -Possess spicule - make up the skeleton Multicellular ,Cell level organization ,Digestion intracellular : Fertilization-internal ,development-indirect through larval stage larva distinct from adult   

 Coelenterata (Cnidaria)
marine sessile or free swimming, diploblastic     Radial symmetry –Diploblastic middle layer mesoglea
*Possess stinging cells (nematocysts)-anchorage defence capture
Possess alternations of generations---> sexual ---> asexual ---> sexual ---> asexual---> & continues. Occurs in all classes except in class Anthozoa
Asexual= attached -->polyp (non-motile)    -Sexual= free swimming ---> medusa
-Extracellular digestion
Tissue level organization Single body cavity coelenteron with single mouth hypostome

Characteristics to the Phylum Platyhelminthes---> Flat Worms
-Bilateral Symmetry-Triploblastic -**Flattened,  dorso- ventrally ,acoelomate organ level organization      

   Hooks and suckers  in parasitic forms, some absorb directily through body surface
*Excretory system with flame cells (protonephridia)
-Most species are hermaphroditic-male and female sex organs present
internal fertilization indirect development
 example   Planaria. flukes & liver flukes.