Kingdom Animalia Introduction & Worms QUIZ
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Last updated 1:34 AM on 2/3/23
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21 Terms
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What domain, kingdom, and phylum are we currently studying?
Eukarya, animalia, platyhelminthes
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bilateral symmetry
can be divided by a plane through their center in one place to form mirror images
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radial symmetry
can be divided by a plane in several places to form mirror images
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asymmetry
no symmetry
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endoderm
inner layer, forms the digestive system
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mesoderm
middle layer, forms the muscle, circulatory, excretory, and respiratory systems
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ectoderm
outer layer, includes the nervous system and skin (outer coverings)
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gastrulation
stage in embryonic development when blastula develops into gastula
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cephalization
concentration of sensory and nerve cells at one end of the organism.
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hermaphroditism
sexually reproducing
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coelem
body cavity
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acoelomate
animal lacking a formal body cavity
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regeneration
a form of asexual reproduction
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phylum for roundworms
nematoda
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phylum for flatworms
platyhelminthes
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phylum for segmented worms
annelida
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all worms exhibit _____ symmetry
bilateral
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associated with the planarian’s nervous system
ganglia
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asexual reproduction can occur through the process of _____
transverse fission
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a hermaphrodite is an animal that:
has both male and female parts
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how does the dugesia obtain oxygen?
diffusion
