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14 Cards in this Set
- Front
- Back
1) phylum? 2) identify: osculum & function 3) identify: ostia & function |
Phylum Porifera
H2o is absorbed thru the ostia
h2o current leaves the sponge through the osculum |
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Identify these 3 different sponge skeletons |
1) spongin 2) spicule silica (lace) 3) spicule calcium carbonate (hard, tough) |
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What is the function of a spongocoel/choanocyte? |
Generates an h2o current across the microvilli, who then filter nutrients through the current
Used by porifera |
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Sponges and Cnidarians: energy obtaining patterns |
chemoheterotrophs |
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Sponges and cnidaria: diploblastic |
Contain 2 cell layers during embryonic development: endoderm, ectoderm |
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Porifera reproduction |
Mostly asexual, some sexual |
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Polyp |
Young cnidarian (ex. Coral) asexual and sessile (fixed in one place) |
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Medusa |
Middle aged cnidaria (ex. Jellyfish) Sexual reproduction Free floating |
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Larval |
Older cnidaria Free-swimming stage |
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1) Phylum? 2) Class? |
1) cnidaria 2) hydrozoa Alternate between polyp/medusa |
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Cnidodytes |
Associated w/ hydrozoa "Stinging cell" protection mechanism and helps to capture prey |
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Feeding polyp vs reproductive polyp (picture) Phylum? Class? |
Phylum cnidaria Class obelia |
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Class Scyphozoa |
Belong to phylum cnidaria Medusa dominant: True jellyfish |
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Class Anthozoa |
Belong to phylum cnidaria Polyp dominant: Coral, sea anemones Hard exoskeleton of CaCO3 |
