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18 Cards in this Set
- Front
- Back
What are these and how are they formed? |
Spicules, and they are formed by calcareous or sileceous structures for support formed by sclerocytes |
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What is this called in a sponge and how is it formed? |
Spongin are collagenous protein arranged in fibers and formed by spongocytes. |
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What is the most common structure for a sponge? |
the Leuconoid structure |
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What do Archeocytes do in sponges? |
They catch food and obstructions when entering the sponge and absorb them into the sponge for digestion |
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In asexual reproduction for sponges, what is fragmentation? |
A part of the sponge breaks off to become a new sponge |
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In asexual reproduction in sponges, what is budding? |
Budding is an unequal division of an organism, it is caused by an outgrowth on the parent cell and eventually breaks off to become it's own organism. |
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What is the cyst-like reproductive unit that takes place in fresh water sponges and is capable of surviving over the winter? |
Gemmule formation |
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Oocytes develop from either __________ or __________. |
archeocytes or choanocytes |
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Sperm in sponges develops from ____________. |
choanocytes |
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What type of birth do sponges give when they do internal fertilization?(sperm is released but oocytes stay) |
viviparous |
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What is the name of the free-swimming larva of most sponges? |
Parenchymula |
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What are the 4 classes of sponges? |
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What are 3 characteristics of the Class Calcarea? |
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What are 3 characteristics of the Class Homoslcera? |
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What sponge class does this image belong to? |
Hexactin |
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What are 3 characteristics of the Hexactin Class? |
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What sponge class is this and give 3 characteristics: |
Demospongia
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What phylum is the most used for Marine Natural Products as of 2009? |
Porifera |
