THE NEMATODA DIGESTIVE SYSTEM
They're traditionally known as roundworms are the most diverse phylum. They are very hard to distinguish. The nematode digestive system is generally divided into three parts, the stomodeum, intestine, and proctodeum. The stomodeum consists of the mouth and lips, buccal cavity, and the pharynx (esophagus). Each of these regions are used extensively in taxonomy and classification of nematodes, as well as providing as indication of feeding habit or trophic group. For example, the buccal cavity of plant parasitic nematodes (and some insect parasites) is modified in the form of a hollow spear, adapted to penetrate and withdraw the contents of host cells. Predaceous nematodes often have a buccal cavity characterized by teeth or hook-like projections. The buccal cavity of bacterial feeding nematodes is relatively unadorned.
The digestive system of flatworms is very simple: food goes into a sac-like gut from the mouth, gets digested, and whatever is left comes back out through the mouth. It rarely has any other organs associated with it . For roundworms, they have 3 parts to their digestive system: stomodeum (which is stoma and esophagus), mesenteron (intestine), and proctodeum (rectum and anus). The digestive system of nematodes is usually a simple tube with the majority of variations occurring in the sizes of the mouth opening, buccal capsule and esophagus.
The digestive system of flatworms is very simple: food goes into a sac-like gut from the mouth, gets digested, and whatever is left comes back out through the mouth. It rarely has any other organs associated with it . For roundworms, they have 3 parts to their digestive system: stomodeum (which is stoma and esophagus), mesenteron (intestine), and proctodeum (rectum and anus). The digestive system of nematodes is usually a simple tube with the majority of variations occurring in the sizes of the mouth opening, buccal capsule and esophagus.