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  1. Nematode - Wikipedia

    The nematodes (/ ˈnɛmətoʊdz / NEM-ə-tohdz or NEEM-; Ancient Greek: Νηματώδη; Latin: Nematoda), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum …

  2. Nematode | Definition, Description, Diseases, & Facts | Britannica

    Dec 18, 2025 · 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 …

  3. 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 …

  4. Phylum Nematoda- characteristics, classification, examples

    Aug 3, 2023 · Nematodes (Gr., nema thread+ eidos, form) are commonly referred to as non-segmented roundworm, threadworm or pinworm, as distinct from flatworm and higher …

  5. Nematodes - PMC

    Approximately 8–15% of crop losses are attributed to nematodes worldwide, with a cost of at least $80 billion. This Primer will take a broad look at the diverse groups that make up the phylum …

  6. 28.4B: Phylum Nematoda - Biology LibreTexts

    The phyla in this group have a hard cuticle covering their bodies, which must be periodically shed and replaced for them to increase in size. Phylum Nematoda includes more than 28,000 …

  7. Nematodes - Cornell University

    Entomopathogenic nematodes are extraordinarily lethal to many important insect pests, yet are safe for plants and animals.

  8. Phylum Nematoda | Biology for Majors II - Lumen Learning

    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” …

  9. Nematode - Ask Microbiology

    Nematodes are unsegmented cylindrical worms belonging to the phylum Nematoda, found in nearly every habitat and many are important parasites of plants and animals.

  10. Introduction to Nematodes - UC Davis

    Nematodes are invertebrate roundworms that inhabit marine, freshwater, and terrestrial environments. They comprise the phylum Nematoda (or Nemata) which includes parasites of …