Nematodes may be small in size, but they are large in number. Scientists estimate that there are over a million different species of Nematodes. They practically can live anywhere; land, water, host animals, and some could even be found living in old vinegar. One time there were approximately 90,000 different organisms of Nematodes found in a single rotting apple. Yet, Nematodes are generally smaller than most animals because the size of a Nematode is small enough to be measured in micrometers. Yet, some Nematodes can be as long as a whole meter. Though for most Nematodes they are generally invisible to the human eye.
A Nematode is sometimes called a roundworm because of the round cross section they have on their body. The Anatomy of a Nematode is a hollow tube within a larger tube. A Nematode does not have a skeleton, but instead to support their body they use large amounts of pressure to make the body feel very hard. In order for a Nematode to contain this pressure it needs a cuticle which helps regulate what gasses or water go in and out of the body. If a Nematode wanted to decrease the pressure in its body then the cuticle would release either gas or water and if a Nematode wanted to increase the pressure in its body then the cuticle would intake either gas or water. This cuticle can also act as the respiratory system because it inhales oxygen.
A Nematode is sometimes called a roundworm because of the round cross section they have on their body. The Anatomy of a Nematode is a hollow tube within a larger tube. A Nematode does not have a skeleton, but instead to support their body they use large amounts of pressure to make the body feel very hard. In order for a Nematode to contain this pressure it needs a cuticle which helps regulate what gasses or water go in and out of the body. If a Nematode wanted to decrease the pressure in its body then the cuticle would release either gas or water and if a Nematode wanted to increase the pressure in its body then the cuticle would intake either gas or water. This cuticle can also act as the respiratory system because it inhales oxygen.