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| Are they acoelomates, pseudocoelomates or coelomates? |
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| How do the tissues of Platyhelminthes differ from that of Cnidaria? |
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| How does the symmetry pattern of Platyhelminthes affect the nervous system? |
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| Because the Platyhelminthes have bilateral symmetry, they have no need to sense things from all around, so they can have ganglia rather than a nerve net. |
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| What nervous system advances are present? |
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| They now have ganglia, which helps sense objocts and its surroundings, while less advanced nervous systems had nerve nets. |
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What is its nervous system like?
How well do its eyes work?
What are auricles? |
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The nervous system is cerberal ganglia- clusters of nerve cells.
It's eyes sense light.
Auricles are... |
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Sexually:
Hermaphrodites
Asexually:
Fision- break into two parts (Planarians)
Proglottid- Repeating unit of body with reproductive organs (Tapeworms) |
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What type of digestive system is present?
Which organs? |
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2 way digestive system (closed)
Organs:
Pharynx
Gastrovascular cavity
Mouth (in middle of body)
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What organisms are contained in the phylum Platyhelminthes?
Which are parasites? |
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All:
Flatworms
Planarians
Flukes
Tapeworms
Parasitic:
Flukes
Tapeworm |
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