PHORONIDA Meaning and
Definition
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Phoronida is a small group of marine, worm-like animals belonging to the phylum Phoronida. They are commonly referred to as horseshoe worms due to their horseshoe-shaped bodies. Phoronida is a relatively obscure and less-studied group of invertebrates within the animal kingdom.
Horseshoe worms possess a unique anatomical structure characterized by a U-shaped digestive system, encased within a protective tube they construct from secreted mucus. These worms are typically sessile, attaching themselves to various substrates on the seafloor using a specialized structure known as a basal disc. They are found in both shallow and deep waters, mainly in coastal areas and continental shelves.
Phoronida are filter feeders, meaning they obtain their nutrition by filtering tiny organic particles and plankton from the surrounding water using a specialized lophophore—a circular structure lined with ciliated tentacles surrounding the mouth. These tentacles create currents that draw in prey towards the mouth for ingestion.
Reproduction in phoronids can occur both sexually and asexually. Some species are hermaphroditic, possessing both male and female reproductive organs. Fertilization is internal, and the resulting embryos develop in a special brood pouch within the body until they are released as planktonic larvae.
The ecological role of phoronids is not yet well understood. They likely play a crucial part in marine ecosystems by recycling organic matter and providing food for other organisms. However, further research is required to gain a comprehensive understanding of their ecological significance.
Common Misspellings for PHORONIDA
Etymology of PHORONIDA
The word "Phoronida" comes from the combination of the Greek words "phoron" meaning "bearer" and "eidos" meaning "form" or "shape". It was coined by the Danish zoologist Japetus Steenstrup in 1847 to describe a group of marine animals that he discovered. The name reflects the characteristic shape of these creatures and their ability to extend a lophophore (feeding structure) from their bodies.
Similar spelling words for PHORONIDA
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