Platyhelminth: meaning, definitions and examples
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Platyhelminth
[ ˌplætɪˈhɛl.mɪnθ ]
biological classification
Platyhelminths, also known as flatworms, are a phylum of invertebrate animals characterized by a flat, ribbon-like body shape. They are typically unsegmented and bilaterally symmetrical, featuring a simple body structure without a body cavity. Platyhelminths include free-living species and parasitic forms, such as tapeworms and flukes.
Synonyms
cestode, flatworm, trematode, turbellarian.
Examples of usage
- Platyhelminth larvae are often found in freshwater environments.
- Some platyhelminths are known for their regenerative abilities.
- Researchers study platyhelminth diversity in tropical ecosystems.
Etymology
The term 'Platyhelminth' originates from the Greek words 'platus' meaning flat and 'helminthe' meaning worm. The classification of these organisms began in the early 19th century when scientists sought to categorize the diverse types of worms that were being discovered. The distinct characteristics of platyhelminths, such as their flat body structure and the absence of a coelom, led to their classification as a separate phylum within the animal kingdom. The study of platyhelminths has expanded significantly, especially given their medical importance as many are parasitic and can cause diseases in humans and livestock. Understanding their biology and ecology provides insights into parasitology and biodiversity.