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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 are sea anemones, corals, Hydrozoa are hydra, Portuguese man-o-war, Scyphozoa are jellyfish, Cubozoa are box jellies and Staurazoa are star jellies |
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What phylum do sea sponges belong to? |
Phylum Porifera |
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What is a choanocyte, what is it for? |
Are cells that line the interior of asconoid, syconoid and leuconoid body type sponges that contain a central flagellum, or undulipodia, surrounded by a collar of microvilli which are connected by a thin membrane. They make up Choanoderm, a type of cell layer found in sponges. |
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What is a spicule? What is for? Where are they made? |
Are any of various small needle-like anatomical structures occurring in organisms. They provide structural support and deter predators. |
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What 3 cell types make up a sponge? |
Choanocytes, Microvilli, and Choanoflagellates |
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What phylum are sea walnuts a member of? |
Mnemiopsis |
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What are the comb rows in ctenophora for? |
In order to capture prey, ctenophores possess sticky cells called colloblasts. |
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What is the life cycle of a cnidarian? |
Cnidarians all have a life cycle of two forms. One is a free-swimming jellyfish medusa stage and the second is an attached polyp stage. |
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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 specialized cell in the tentacles of a jellyfish or other coelenterate, containing a barbed or venomous coiled thread that can be projected in self-defense or to capture prey. Is an explosive cell containing one giant secretory organelle or cnida |
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Are cnidarians sexual or asexual, explain? |
Not all cnidarians reproduce sexually, with many species having complex life cycles of asexual polyp stages and sexual medusae. |
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Differences in gastrodermis/epidermis. |
The epidermis refers to the outer layer of skin, and The gastrodermis refers to the inner layer of cells lining the gastrovascular cavity of Cnidarians |
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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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