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14 Cards in this Set
- Front
- Back
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What are the five classes of cnidarians and their identifying characteristics? |
Anthozoa (corals and sea anemones), Scyphozoa (Swimming jellyfish), Staurozoa (Stalked jellyfish), Cubozoa(box jellyfish), Hydrozoa (hydroids) |
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What phylum do sea sponges belong to? |
Porifera |
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What is a choanocyte, what is it for? |
a flagellated cell with a collar of protoplasm at the base of the flagellum, they propel nutrients to the sponge. |
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What is a spicule? What is it for? Where are they made? |
one of the small, hard, calcareous or siliceous bodies that serve as the skeletal elements of various marine and freshwater invertebrates |
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What 3 cell types make up a sponge? |
choanocytes, choanoflagellates, and microvilli |
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What phylum are sea walnuts a member of? |
ctenophora |
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What are the comb rows in ctenophora for? |
They're used to bite gelatinous prey |
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What is the life cycle of a cnidarian? |
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What is a planula? |
a free-swimming coelenterate larva with a flattened, ciliated, solid body. |
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What is a nematocyst? Cnidocyst? |
a cell in the tentacle containing a barbed or venomous coiled thread an explosive cell containing one giant secretory organelle or cnida |
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Are cnidarians sexual or asexual, explain? |
many of them are asexual but some release both sperm and egg |
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Differences in gastrodermis/epidermis. |
gastrodermis lines the gut cavity and the epidermis is the protective outer layer |
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Sketch a simple drawing and identify the structures of Aurelia. |
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Sketch a simple drawing and identify the structures of a sponge. |
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