BS 10-26 - October 26, 2007 BS 110 *Figure 30.2 from text...

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October 26, 2007 BS 110 **Figure 30.2 from text book: overview of the six phyla of fungi we talked about (note cards?) Animalia (continued) - Most ingest food, heterotrophic - multicellular, motile - multicellular sex organs - asexual and/or sexual reproduction - complex development with an embryonic or larval stage 1 st Phylum : Porifera (sponges) – are aquatic (most are marine), generally considered to be colonies of coordinated (means each have their own functions) but more or less independent cells - cavity lined with flagellated collar cells (choanocytes [involved in water movement in the sponge, and obtain food materials]), amoebocytes [can move through sponge, obtain and distribute food to other cells] -- these are 2 major types of cells in sponges - asymmetrical, radial symmetry (no matter how we cut it in half, both halves would equal each other) **figure 31.3** - water moves into the sponge through cells called porocytes - osculum, water carries waste products and sperm - as it moves into the sponge, the sperm in drawn into sponge, nonmotile eggs are fertilized and the zygote is formed - crystalline spicules/protein fibers (give protection and help maintain shape)
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This note was uploaded on 04/20/2008 for the course BS 110 taught by Professor S.lawrence during the Fall '07 term at Michigan State University.

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BS 10-26 - October 26, 2007 BS 110 *Figure 30.2 from text...

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