Example:Platyhelminthes ( such as flatworms). The digestion occurs outside the cell in the cavity of alimentary canal. 2. Difference between Intracellular and Extracellular Digestion. Intracellular digestion involves secretion of digestive enzymes by the surrounding cytoplasm into the food vacuoles. Phylum Platyhelminthes is divided into four classes. For digestion to be considered intracellular, the nutrients – glucose, fatty acids, proteins, etc – must be inside our cells, not the lumen or opening of our digestive system. Here, the food gets broken down into finer particles in the cytoplasm as such animals lack a proper digestive tract. Intracellular digestion refers to the process of digestion of food in the cytoplasm of cells. Releasing enzymes, such as pepsinogen and pepsin, to the outside of our cells also means extracellular digestion. The digestion in Aschelminthes is extracellular. Intracellular digestion occurs inside cells food particles are golf by endocytosis which is the uptake of biological molecules DIA for nation of food vacuoles by plasma membrane Extracellular digestion occurs outside of cells, in compartments that is continuous with outside of animals body. Method of Absorption Intracellular Digestion: The nutrients diffuse into the cytoplasm through the membrane of the vacuole in intracellular digestion. The organism digests the food, transforming it into compounds it can actually use, in an environment outside the cell. Intracellular digestion. This contrasts with intracellular digestion, where cells engulf food and digest it within their walls. Btw the nine major phyla are Porifera, Cnidaria, Chordata, Mollusca, Arthropoda, Nematoda, Annelida, Platyhelminthes, and Echinodermata In amphioxus, digestion is both extracellular and intracellular. 2. The digestion of food occurs within the cell. Their digestive system is intracellular, meaning that their digestive system occurs inside a cell. These two types take place in the lysosome and they both have very specific functions. Extracellular digestion is the breakdown of food into nutritional components with the use of secreted enzymes. 1. (a) Class Turbellaria includes the Bedford’s flatworm ( Pseudobiceros bedfordi ), which is about 8–10 cm in length. (b) The parasitic class Monogenea includes Dactylogyrus spp. Extracellular digestion takes place outside the cell. Which of the nine major phyla have intracellular and which have extracellular digestion? Intracellular digestion means that the food particle enters inside the cell and then the process of digestion starts whereas Extracellular digestion means that digestion occurs on the structures (organs) made up of cells and not inside the individual cell. Digestion is the process of breaking down food into nutrients. Intracellular digestion is divided into heterophagic digestion and autophagic digestion. monogenetic (1 host) flukes, extracellular digestion, intracellular level, External parasites, Posterior hooks may become the posterior attachment organ of the adult, the opisthaptor Cestoda tapeworms, no digestive system,Absorb digested nutrients, long flat bodies with scolex 2. Both approaches to digestion can be seen at a variety of levels of the … In platyhelminthes is digestion intracellular or extracellular - Biology - Animal Kingdom . In the hydra, food is trapped in the gastrovascular cavity. Intracellular digestion takes place in animals without a digestive tract, in which food items are brought into the cell for digestion. 1. Class Turbellaria is free-living, aquatic, carnivorous, and has an incomplete digestive tract. Examples of both can be seen in some organisms. In humans, the digestive tract mechanically and chemically breaks down food so intestinal cells can absorb nutrients for the body. intracellular: Intracellular digestion is a form of digestion which takes place within the cytoplasm of the organism. The process of intracellular digestion is divided into two groups the heterophagic digestion and autophagic digestion. Their digestive system starts in the mouth where it then leads to the pharynx and then into a temporary space that take in food particles by phagocytosis. This is the main external morphological feature that differentiates them from nematodes (roundworms). Intracellular digestion is a process where cells intake materials and break them down within the cell membrane, as opposed to extracellular digestion, where cells secrete enzymes to break down components outside the cell wall. These two kinds of intracellular digestion occur in the lysosome and they both have very specific functions. Answer. Extracellular digestion occurs outside the cell in the cavity of the alimentary canal.