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10 Cards in this Set

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Phylum:

Porifera (Sponges)
-simplest of the animal phyla
-asymmetrical
-no organ dev. or complex tissues
-Adults are sessile- attached to a surface;
-larvae are free-swimming
-feed by circulating water through pores and canals; trapping particles
-skeleton composed of spicules, spongin or both
1. Grantia
Phylum Porifera: (3)
1. sample
ID: osculum & Spicules
2. c.s.
ID: incurrent canal & spongocoel
3. prepare we mount
2. Spongia
Phylum Porifera: (1)
Phylum Porifera: Terms

Heterotrophs
-organisms that derive their energy from organic molecules made by other organisms
Phylum Porifera: Terms

Epithelial Cells
-flat cells that line the outer walls of sponges
Phylum Porifera: Terms

Spongocoel
-central cavity inside the sponge
Phylum Porifera: Terms

Choanocytes
-cells lining the spongocoel with flagella that draw water containing food particles into the spongocoel through pores in the body wall
Phylum Porifera: Terms

Osculum
-a large hole in the end of the sponge through which filtered water exits
Phylum Porifera: Terms

Spicules
-crystalline skeletal structures in walls of some sponges composed of either calcium carbonate or silica
Phylum Porifera: Terms

Spongin
-skeletal structures in the walls of some sponges which are not crystalline, but flexible fibers composed of protein