AD 5

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3 features of ctenophora
peripheral nerve net responds to gravity and light, eats zooplankton and small fish, sticky tentacles to catch prey
1 of 14
What is the lineage of early organisms? 4
Porifera, ctenophora, placozoa, cnidaria
2 of 14
What is the only species of placozoa known?
Trichoplax adhaerens
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What are key features of placozoa 3
flat animal, no neuorns, muscle or digestive system, lack basal lamina
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What are cnidaria
Stinging nematocyts with a nerve net and neurotransmitters, stinging stylet held in place by collagen and fires poison
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What are the 4 cnidaria classes
Anthozoa, scyphozoa, cubizoa and hydrozoa
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What is special about box jellyfish eyes?
they hold their eyes in position when moving pointing up and use their lower and upper eye lenses for navigation
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Whats included in the anthozoa class?
Sea anenomes and coral
8 of 14
Key features of coral and what effects them (4)
Made up of calcium carbonate and algae, increasing acidic seas causes them to dissolve, symbiosis w dinoflagellates for energy but risk with rising sea levels for dinoflagellates
9 of 14
Key features of bilateria 7
Cephalization, symmetry, 7/8 hox genes, sensory organs, mouth and legs, all through gut, triploblast w mesoderm
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What is a protostome
Thought to be an organism that develops mouth first but theres a few deviants of this
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What is a deuterostome?
Organism that develops anus first
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What is a coelum
Hole in body linked by epithelium from mesoderm that forms a through gut and holds organs in place
13 of 14
What are acoels?
small soft bodied unsegmented marine worms
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Other cards in this set

Card 2

Front

What is the lineage of early organisms? 4

Back

Porifera, ctenophora, placozoa, cnidaria

Card 3

Front

What is the only species of placozoa known?

Back

Preview of the front of card 3

Card 4

Front

What are key features of placozoa 3

Back

Preview of the front of card 4

Card 5

Front

What are cnidaria

Back

Preview of the front of card 5
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