Nematodes are bilaterally symmetrical, elongate, and usually tapered at both ends. Some species possess a pseudocoel, a fluid-filled body cavity between the digestive tract and the body wall. Like arthropods and members of six other phyla, nematodes secrete an external cuticle that is periodically molted.
What characteristics allow nematodes to be successful?
Cylindrical body with no major appendages. This structural attribute is advantageous for animals living in granular habitats such as terrestrial or marine sediments or the intestine of animals. II. Adaptation to low concentrations of oxygen.
What are common characteristics of arthropods and nematodes?
The nematodes and the arthropods belong to a clade with a common ancestor, called Ecdysozoa. The name comes from the word ecdysis, which refers to the periodic shedding, or molting, of the exoskeleton.
What are the general characteristics of the Aphasmids?
Mainly, they are free-living in soil and water; however, there are a few parasitic forms of aphasmids. As the alternate name implies, they do not have phasmids, and the amphids are located posteriorly on the head region. In fact, they have no sensory bristles or papillae on the head and body.
How do you classify nematodes?
Like many other organisms in kingdom Animalia (also referred to as metazoa) nematodes are eukaryotic, multicellular organisms that obtain nutrients from organic sources. Nematodes/roundworms make up the phylum Nematoda.
More useful articles on a similar topic 👇
What are three common characteristics of flatworms and roundworms?What are physical characteristics of roundworms?
