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BIO 335: Porifera Test- Questions with 100% Correct Answers
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BIO 335: Porifera Test- Questions with 100% Correct Answers
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BIO 335: Porifera Test- Questions with100% Correct Answers
What are collar bodies? - Answer choanocytes
Phylum porifera (sponges) - Answer filter feeders
skeleton composed of spicules
marine and fresh water
covered in ostium and osculum
have choanocytes
Synapomorphy - internal system of pores and canals Unique characteristics:
spicules, choanocytes, and incipient epithelium
What are ostium? - Answer Ostium are incurrent pores on a sponge
What are osculum? - Answer Osculum are out-current pores on a sponge
What are choanocytes? - Answer Flagellated cells in a that create a current for water
filtration and phagocytize food particles in the water
What are the three types of canal systems in sponges? - Answer The three types of
canal systems in sponges are 1. Asconoid, 2. Syconoid, and 3. Leuconoid
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