4 天之前 · Species of the phylum Nemertea, or ribbonworms, inhabit all parts of the world's oceans, as well as many freshwater and terrestrial habitats. They are unsegmented worms characterized by a unique and remarkable eversible proboscis used for prey capture and sometimes locomotion.

Nemertea is a phylum of animals also known as ribbon worms or proboscis worms, consisting of about 1300 known species. [2][3] Most ribbon worms are very slim, usually only a few millimeters wide, although a few have relatively short but wide bodies. Many have patterns of yellow, orange, red and green coloration.

2018年3月20日 · Phylum Nemertea, or ribbon worms, contains approximately 1,200 species of bilaterally symmetrical, coelomate, unsegmented worms, which are divided into two classes, each of which is divided into two orders (Anopla: Palaeonemertea, Heteronemertea and Enopla: Hoplonemertea, Bdellonemertea).

Nemertea is a phylum of largely aquatic invertebrate animals also known as ribbon worms or proboscis worms and characterized by long, thin, unsegmented body that is flattened posteriorly and cylindrical anteriorly and has a long retractable proboscis that can evert for such purposes as capturing prey, defense, and locomotion.

Nemerteans, are a fascinating group of unsegmented animals. They are also known as nemertini, ribbon, or proboscis worms, and belong to the phylum Nemertea. Most species are tiny, inconspicuous inhabitants of the coastal waters. They are bottom dwellers and active predators that feed on various small animals, including plankton.

2020年11月23日 · The ribbon worm, or nemerteans, is a group of segmented marine worms found throughout the world’s oceans. Ranging in size depending on the species, some ribbon worms grow very long. Indeed, the bootlace worm (Lineus longissimus), can grow longer than a blue whale, possibly making it the longest animal in the world.

Ribbon worm, any member of the invertebrate phylum Nemertea (sometimes called Nemertinea, or Rhynchocoela), which includes mainly free-living forms but also a few parasites of crustaceans, mollusks, and sea squirts. The majority of the approximately 900 known nemertean species are …

2024年8月10日 · Nemerteans are a group of about 1300 species in the Phylum Nemertea and are often called ribbon or proboscis worms. They do possess a proboscis used to capture prey. Most are marine and live on the bottom both near the beach and a great depth. They are more temperate than tropical and do have a few parasitic forms.

The Nemertea, also called ribbon worms or proboscis worms, (and sometimes referred to as Rhynchocoela or Nemertini,) are a distinctive group of 1150 known species of mostly marine invertebrates, found world-wide (Gibson, 1995).

Nemerteans (nem-er´te-ans) (Gr. Nemertes, one of the Nereids, unerring one) are often called ribbon worms. Their name refers to the unerring aim of the proboscis, a long muscular tube (Figures 14-23 and 14-24).