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Poriferans Quiz
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1

What is the defining characteristic of the Phylum Porifera?
2

What does the name “porifera” mean?
3

What is the primary habitat of sponges?
4

What do sponges “lack”?
5

Define: spongocoel, mesohyl, ostia, osculum, choanocyte, archaeocyte, pinacocyte, porocyte, spicule.
6

What are 3 functions of choanocytes? functions of archaeocytes? functions of pinacocytes?
7

Distinguish between spicules and spongin.
8

What are gemmules and why are they important?
9

What are the 3 basic levels of sponge construction?
10

Name the 3 classes of sponges. Why are the sclerosponges no longer considered as a class?
11

Distinguish between the 3 classes of sponges.
12

What are the “killer sponges”?
13

Distinguish between amphiblastula larvae and parenchymella larvae.





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