Topic Content:
- Characteristics of Phylum Platyhelminthes
- Classification of Platyhelminthes
Phylum Platyhelminthes are also known as flatworms and they include many free-living and parasitic life forms.
Characteristics of Phylum Platyhelminthes:
Below are important characteristics of Platyhelminthes:
1. They are multicellular flatworms with tissues, organs and organ systems including a nervous system with a simple brain.
2. They are triploblastic with three body layers (ectoderm, mesoderm and endoderm)
3. They do not have a body cavity (acoelomates.)
4. Their body is dorsoventrally flattened.
5. They exhibit bilateral symmetry. Bilateral symmetry is the arrangement of body parts into left and right halves on either side of a central axis.
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