Phylum Porifera . Kingdom Animalia Multicellular Eukaryotic, No cell walls Heterotrophic . Porifera – “Pore Body” has many pores . Around 5,000 different species Most are Marine No Symmetry, “Asymmetrical” Range in size from 2 cm – 2 meters. Phylum Porifera . Freshwater Sponges .
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A colony of single celled Protists called…. “Choanoflagellates”
Archaeocytes = Amoebocyte
These cells are “totipotent” – they are able to develop into any of the other types of sponge cells
Free – Swimming, flagellated larva is called a “Planula”
Sponges are “hermaphrodites” (produce both sperm and egg)