Platyhelminth: meaning, definitions and examples
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Platyhelminth
[ˌplætɪˈhɛl.mɪnθ ]
Definition
Context #1 | Noun
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.
Interesting Facts
Etymology
- The word comes from Greek, where 'platy' means flat and 'helminth' means worm.
- It was first coined in scientific literature in the 19th century as scientists began classifying different types of worms.
Biology
- Platyhelminths include species like planarians, flukes, and tapeworms, showcasing a diverse group of organisms.
- They are notable for their regenerative abilities, allowing them to regrow parts of their bodies, which is quite rare in the animal kingdom.
- Some serve as important parasites, affecting various hosts, including humans, while others are free-living and play roles in aquatic ecosystems.
Ecology
- These worms can be found in a variety of environments, from freshwater lakes to ocean depths, indicating their adaptability.
- Their flat bodies are suited for absorption of nutrients directly through the skin, rather than through a conventional digestive system.
Cultural Significance
- In some cultures, certain flatworms are studied for medicinal properties, as some may produce compounds beneficial for health.
- Flatworms have occasionally appeared in folklore, often depicted in stories and legends due to their unique shapes and lifestyles.
Research and Science
- Scientists study these creatures to gain insights into evolution and the development of complex body systems.
- Due to their simplicity, they are often used in laboratories to teach basic biological concepts such as regeneration and body structure.