Term
| Sponges are bilaterally symmetrical |
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Definition
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Term
| A "true coelom" is distinguished by a mesodermal lining, or peritoneum |
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Definition
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Term
| Cnidarians possess a network of nerve cells called a "nerve net", but no centralized brain. |
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Definition
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Term
| Sponges are asexual, and reproduce only by budding or fragmentation |
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Definition
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Term
| Cnidarians include sponges, placozoans and sea anemones |
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Definition
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Term
| The cells that line the interior surface of sponges are called choanoflagellates. |
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Definition
False
Choanoflagellates are protists; the collar cells of sponges resemble choanoflagellates |
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Term
| The coelom in an animal body is the empty area of the gut. |
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Definition
False
The coelom is the body cavity, not the gut. |
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Term
| The gut of cnidarians is domplete, meaning it has a mouth at one end, and an anus at the other |
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Definition
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Term
| The mesoglea of jellyfish is used as a hydrostatic skeleton |
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Definition
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Term
| Choanoflagellates prodce signalling molecules and adhesion proteins that are similar to those made by cells of all multi-cellular animals |
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Definition
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Term
| Sponges produce larvae that have flagella; cnidarians produce a ciliated larva |
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Definition
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Term
| Protostomes are the primitive invertebrates that develop an anus first, and later a mouth |
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Definition
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