ABOUT Phylum nematoda and their Digestive systems
Nematodes are multicellular organisms that are harmful especially to plants, animals, and other living creatures, or parasitic. Nematodes are also known as roundworms. They have openings on both sides of their bodies. Round worms/nematodes are also bilaterally symmetrical, alike the Platyhelminthes.
Nematodes have a three part digestive system. The three parts are the stomodeum, intestine, and proctodeum. The stomodeum consists of the mouth, the esophagus and the pharynx. When the food is taken in through the mouth at one end of the roundworm, the food travels through the esophagus and then into the intestines. The esophagus pumps the food taken in by the nematode and into the intestine as mentioned. As the food moves down through the tube-like intestine, it reaches a section known as one of two things. In males, it is known as the cloaca, and in females it is known as the rectum. The digested food has now broken down the minerals needed throughout the body, and the remaining food can now by disposed as waste out the back end of the worm. This end is known as the anus.
Nematodes differ from the phylum Platyhelminthes in a few ways through their digestive track. Both of their digestive systems are very similar and very simple. Phylum Nematoda have their mouths at the head of the organism while phylum Platyhelminthes takes in their food under the body of their structure, all through a mouth. Both Nematoda and Platyhelminthes have a pharynx connecting the mouth to the esophagus. When the food is in the intestine of a Platyhelminthes, is is sent to all places needed after it is broken down. Nematodes don't distribute food throughout the body after its broken down. The body takes in what it needs and disposes of the rest. The last major difference between Phylum Nematoda and Platyhelminthes is how the organism gets rid of their food. Nematodes get rid of their food out of the anus on the opposite end of the mouth. Flatworms get rid of their food the same way they take their food in, through the mouth. Recall, that after all the nutrients have been shared throughout the body in Platyhelminthes, the food is expelled from the body from the mouth.
Nematodes have a three part digestive system. The three parts are the stomodeum, intestine, and proctodeum. The stomodeum consists of the mouth, the esophagus and the pharynx. When the food is taken in through the mouth at one end of the roundworm, the food travels through the esophagus and then into the intestines. The esophagus pumps the food taken in by the nematode and into the intestine as mentioned. As the food moves down through the tube-like intestine, it reaches a section known as one of two things. In males, it is known as the cloaca, and in females it is known as the rectum. The digested food has now broken down the minerals needed throughout the body, and the remaining food can now by disposed as waste out the back end of the worm. This end is known as the anus.
Nematodes differ from the phylum Platyhelminthes in a few ways through their digestive track. Both of their digestive systems are very similar and very simple. Phylum Nematoda have their mouths at the head of the organism while phylum Platyhelminthes takes in their food under the body of their structure, all through a mouth. Both Nematoda and Platyhelminthes have a pharynx connecting the mouth to the esophagus. When the food is in the intestine of a Platyhelminthes, is is sent to all places needed after it is broken down. Nematodes don't distribute food throughout the body after its broken down. The body takes in what it needs and disposes of the rest. The last major difference between Phylum Nematoda and Platyhelminthes is how the organism gets rid of their food. Nematodes get rid of their food out of the anus on the opposite end of the mouth. Flatworms get rid of their food the same way they take their food in, through the mouth. Recall, that after all the nutrients have been shared throughout the body in Platyhelminthes, the food is expelled from the body from the mouth.