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15 Cards in this Set
- Front
- Back
what is a lophophore? what is a trocohphore larvae?
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-a feeding structure that surrounds the mouth(a ring of tenticles)
-a life stage |
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what kind of feeders are rotifers? how do they swim?what kind of coelom do they have?
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-suspension feeders
-spinning structure called corona -pseudocoelom |
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how do rotifers reproduce?
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through mitosis so the eggs have full set of DNA no need for a male to fertilize-ASEXUAL
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what are platyhelmnthes? what kind of coelom do they have? what are they three lineages?
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-flat worms
-acoelom -terbullarians(flat worms) -cestodes(tape worms-in digestive tract) -trematodes(flukes-in circulatory system) |
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what are annelidas?what kind of coelom do they have?what are the two major groups?
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-segemented worms
-true coelom - polychaeta(many bristled worms) and citelleta |
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what are the two typs of citelleta?
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1. oligochaetes(earth worms)
2. nirudrruea(leeches) |
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how do earth worms reproduce?
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they are hermaphridites and use oviaparity
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what is...
oviparity viviparity ovoviparity |
-egg laying
-fertilization and growwth inside the female(humans do this) -ovoviparity(egg dispersed inside mom and they grow off the nutrients of yolk when fully grown then give birth |
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what are molluscs? what structures do they have?
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-squid and clams
-muscular foot, visceral mass(organs, feeding structure) and a mantle(secretes the skeleton) |
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what are the 4 examples of molluscs?
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-bivalvia(clams, scallops)
-gastropoda(snail) -polyacorphora(chiton/have8plates on their shell) -cephalopoda(squids, octupus) |
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what is the key tratit of ecdysozoa? and what are they types?
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-shed theur skind
-nematoda(round worms)and arthropods(spiders insects) |
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what kind of skelton does the nematoda have?
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and endoskeleton under a cuticle layer
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what kind of skeleton does the arthropd have?
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and ectoskeleton,not cuticle layer
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how many molt stages does the nematoda go through?
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4
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what types of coelem do the nematoda and the arthropod have?
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-nematoda=pseudocoelom
-arthropoda=coelem |