nutrition and digestion in human

Tapeworm Parasites are also classified as obligate or facultative. Obligate parasites have to live parasitically at all times. For example: Phytophthora, a fungus which causes potato blight. Facultative parasites may feed parasitically or saprophytically. For example: Candida (fungus causing thrush..

Ingestion Digestion Absorption Assimilation Egestio..

Saprotrophs are decomposers and liberate energy for their own use by breaking down complex organic matter from the dead bodies of other organisms. At the same time this process releases vital chemical elements into the soil which are absorbed by autotrophs. Thus saprotrophs aid the recycling of..

It has an inner circular and the outer longitudinal muscles. Both these layers facilitate the movement of food along the alimentary canal. The mucous coat keeps the passage smooth and mixes the food with mucus. The muscle layer by periodic contraction and expansion moves the food along the canal. ..

It is well developed in reptiles, birds and prototherians. It is mainly digestive in function so it acts as an extra embryonic gut. In human beings it is vestigi..

(animals which have saprotrophic nutrition) are Mastigamoeba and Chilomonas. The digestive juices are secreted by the cell membranes which means the general body surface as they are single-celled protozoans. Saprotrophs are different from detritus feeders which do not dige..

A group of organs become organized into an organ system for coordinating a major function. Different organs in the digestive system carry out functions related to nutrition in an anima..

They feed on decaying organic matter Example: Earthworm ..

'sapros' refers to rotten and 'trophic' refers to food. Saprotrophic nutrition is the process by which the organisms feed on dead and decaying matter. The food is digested outside the cells or even outside the body of the organism - extracellular digestion. The organi..

Nutrition - All organisms require energy in order to stay alive. Energy is utilised to do the various bodily functions such as breathing, ingesting and digesting food, excreting, reproducing, locomotion, etc. Energy is obtained from food. Thus the process of intake of food is vi..