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Nematoda

线虫纲; 线虫类

WordNet (r) 3.0 (2006) (WordNet)

Nematoda
n 1: unsegmented worms: roundworms; threadworms; eelworms [synonym:
{Nematoda}, {phylum Nematoda}, {Aschelminthes}, {phylum
Aschelminthes}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Nematoidea \Nem`a*toi"de*a\, prop. n. pl. [NL., fr. Gr. nh^ma,
nh`matos, thread -oid.] (Zool.)
A phylum of worms, having a long, round, and generally smooth
body; the roundworms. Called also {Nematodea}, and more
commonly {Nematoda}. Formerly, it was classed as a taxonomic
order.
[1913 Webster PJC]

Note: The trichina, stomach worm, and pinworm of man belong
to this group. See also {Vinegar eel}, under {Vinegar},
and {Gapeworm}.
[1913 Webster]

Nematoda \Nem`a*to"da\, prop. n. pl. (Zool.)
A phylum of worms, having a long, round, and generally smooth
body; the roundworms. They are mostly parasites, in plants
and animals, but some are free-living in soil or water. Also
called {Nematoidea}.
[1913 Webster PJC]

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Nematode - Wikipedia
The nematodes ( ˈnɛməˌtoʊdz, ˈniːmə - NEM-ə-tohdz, NEE-mə-), roundworms or eelworms constitute the phylum Nematoda (Ancient Greek: Νηματώδη; Latin: Nematoda)
Nematode | Definition, Description, Diseases, Facts | Britannica
Nematodes are among the most abundant animals on Earth They occur as parasites in animals and plants or as free-living forms in soil, fresh water, marine environments, and even such unusual places as vinegar, beer malts, and water-filled cracks deep within Earth’s crust
Nematodes - Examples, Characteristics, Anatomy, Life Cycle
Nematodes, commonly called roundworms or eelworms, are unsegmented, cylindrical invertebrates that belong to the phylum Nematoda They are among the most widespread and abundant animal groups on Earth
Nematoda (roundworms) | INFORMATION | Animal Diversity Web
Roundworms (nematodes) are bilaterally symmetrical, worm-like organisms that are surrounded by a strong, flexible noncellular layer called a cuticle Their body plan is simple The cuticle is secreted by and covers a layer of epidermal cells
Phylum Nematoda- characteristics, classification, examples
Nematoda are among the most numerous of any phylum About 15,000 species of nematodes are known at present Due to much diversity in form and structures difficult to classify
Introduction to the Nematoda
Introduction to the Nematoda the roundworms There are thousands of nematodes Not only are there more than 15,000 known species of roundworms, but there are many thousands of individual nematodes in even a single handful of garden soil And they keep coming!
Nematoda - an overview | ScienceDirect Topics
Definition Nematodes are nonsegmented roundworms that belong to the phylum Nematoda Most species are free-living in soil or water but a few parasitize humans These infections are some of the most prevalent and affect millions worldwide
Nematodes - Cornell University
Entomopathogenic nematodes are extraordinarily lethal to many important insect pests, yet are safe for plants and animals
14. 7: Phylum Nematoda - Biology LibreTexts
Phylum Nematoda includes more than 28,000 species with an estimated 16,000 being parasitic in nature The name Nematoda is derived from the Greek word “Nemos,” which means “thread” and includes roundworms
28. 4B: Phylum Nematoda - Biology LibreTexts
Nematodes are cylindrical in shape, often looking like thin hairs They possess an exoskeleton that prevents them from drying out It must be shed (a process called ecdysis) in order for them to grow In nematodes, specialized excretory systems are not well developed

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