The nematodes (/ ˈ n ɛ m ə t oʊ d z / NEM-ə-tohdz or NEEM-; Ancient Greek: Νηματώδη; Latin: Nematoda), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic.

Jan 7, 2025 · Nematode, any worm of the phylum Nematoda. 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.

The organisms belonging to the phylum Nematoda are also known as “roundworms”. There are 28000 species of Nematoda identified till date. They are unsegmented vermiform animals.

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 segmented annelids. They are widely distributed, aquatic or terrestrial, parasitic or free-living.

Commonly known as roundworms, nematodes are a group of worms that make up the phylum Nematoda. With well over 15,000 species identified today, they can be found in different habitats ranging from terrestrial to marine environments.

Nov 23, 2024 · Phylum Nematoda. The Nematoda, similar to most other animal phyla, are triploblastic, possessing an embryonic mesoderm that is sandwiched between the ectoderm and endoderm. They are also bilaterally symmetrical: a longitudinal section will divide them into right and left sides that are symmetrical.

Jul 31, 2022 · 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.

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!

Oct 1, 2024 · Nematodes are elongated, unsegmented, thread-like worms, found in various environments such as soil and water. They can be free-living or parasitic, affecting plants, animals, and humans. Nematodes, often referred to as roundworms, exhibit distinct morphological and physiological features that set them apart from other organisms.

Nematoida is a clade of pseudocoelomate free living or parasitic animals. It consists of phyla Nematoda and Nematomorpha. [3][4] The two groups share a number of features in common; the presence of a cloaca in both sexes, aflagellate sperm, and a cuticle made of collagen. [4]