CHAPTER 33 INVERTEBRATES
CHAPTER 33 INVERTEBRATES. Porifera Sponges. Porifera Sponges. Porifera Sponges-osculum, choanocytes-limits size of food particles , must fit into the collar; extra cellular and intracellular digestion amoebocytes, hermaphrodites, reaggregation, spongocoels. Porifera Sponges. Porifera Sponges.
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