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30 Cards in this Set
- Front
- Back
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Classes under Ph Platyhelminthes
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Turbellaria
Trematoda Cestoidea |
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Platyhelminthes, Mollusca, and Annelida are...
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Lophotrochozoans
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Nematoda and Arthropoda are...
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Ecdysozoans
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Echinodermata and Chordata are...
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Deuterostomes
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Round worm phylum
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Nematoda
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flat worm phylum
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Platyhelminthes
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...have a gastrovascular cavity with an incomplete digestive track and acoelomate (lack of a body cavity)
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Platyhelminthes
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Platyhelminthes have what kind of sex characteristics? Hermaphroditic or Gonochoristic
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Hemaphroditic
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How many germ layers do platyhelminthes (Turbellaria/Trematoda/Cestoidea) have?
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3! triploblastic
-Endoderm -Mesoderm -Ectoderm |
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Platyhelminthes have a well developed organ system. They also have an excretory system made of ______________
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flame cells
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Planarians are in the phylum and class...
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Phylum- Platyhelminthes
class- Turbellaria |
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This kind of Platyhelminthe lacks a digestive track
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tape worm
class- cestoidea |
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Flukes are in what phylum and calss?
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Ph- Platyhelminthes
Cl- Trematoda |
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This Platyhelminthe uses fish and snails as intermediate hosts
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liver fluke (trematodes)
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In the class ____________, the _______ is a protective layer which allows them to avoid being digested by the host's digestive enzymes.
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class TREMATODA have a CUTICLE
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class and phylum of tapeworms
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Ph- Platyhelminthes
Cl- Cestoidea |
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the most specialized flatworms are the...
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tapeworms
Cestoidea |
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tapeworm bodies are divided into "segments" (but not real ones) and at the head is a __________
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scolex
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the untrue segments of platyhelminthes class cestoidea are called...
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proglottids
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the lateral projections on the head of a planarian which function as tactile and chemosensory organs
(ph: platyhelminthes/ cl: cestoidea) |
auricles
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Proglottides may be...
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immature, mature, or gravid
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what are immature proglottids?
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a "segment" of the tapeworm with and undeveloped reproductive system
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what are mature proglottids?
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a "segment" of the tapeworm with developed rep system
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what are gravid proglottids?
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a "segment" of the tapeworm with a uterus an fertilized eggs
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characteristics of platyhelminthes
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1 triploblastic
2 bilateral symmetry 3 well developed organ system 4 cephalization (having a head) 5 well dev. nervous system 6 hermaphroditic |
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phylum of round worms
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Nematoda
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have a complete digestive tract and body cavity
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nematoda (round worms)
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what kind of coelum do nematodes have?
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Pseudocelom
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Nematodes _______ musculature cause them to move in a whiplike fashion
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longitudinal muscles
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what phylum are rotifers? "wheel bearers"
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Rotifera
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