General Characteristics
Phylum Platyhelminthes is full of various species of flatworms.
Platy- Flat/ Helminth- worm
There are around 25,000 species
Phylum Platyhelminthes is full of various species of flatworms.
Platy- Flat/ Helminth- worm
There are around 25,000 species
Specific Information
Flatworms have unsegmented bodies and are acoelomates. To the left is a simple diagram of their body plan.
Flatworms have unsegmented bodies and are acoelomates. To the left is a simple diagram of their body plan.
Evolution involving Platyhelminthes
Flatworms were the first to appear with bilateral symmetry, triploblastic bodies, and organs.
Flatworms were the first to appear with bilateral symmetry, triploblastic bodies, and organs.
Characteristics of Flatworms
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Classes of Phylum Platyhelminthes
Similarities and Differences between Cnidarians and Platyhelminthes
Similarities
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Differences
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The Planarian (Dugesia D. tigrina )
- Class Turbellaria
- Soft flatworm that is around 1.3 cm long
- Most are found in freshwater or saltwater
- Moves by gliding with cilia
- Hermaphroditic
- Many scientists have tested regeneration on Planarians.