Saprotrophic Nutrition
Saprotrophic nutrition is a type of nutrition in which organisms obtain their food from dead and decaying organic matter. These organisms are known as saprotrophs. They secrete digestive enzymes into the dead organic matter to break it down into simpler molecules, which they can then absorb and utilize for their own nutrition.

Parasitic Nutrition
Parasitic nutrition is a type of nutrition in which an organism lives on or inside another organism, known as the host, and obtains its food from the host. Parasites are usually smaller than their hosts and can cause harm to the host. They often have specialized structures for attachment and feeding, such as hooks or suckers.

Holozoic Nutrition
Holozoic nutrition is a type of nutrition in which organisms ingest solid organic food and digest it internally. This type of nutrition is found in most animals, including humans. Ingested food is broken down into simpler molecules through mechanical and chemical digestion, which occurs in specialized organs such as the mouth, stomach, and intestines.

Overall, these three types of nutrition represent different ways in which organisms obtain their food. Saprotrophs obtain their food from dead organic matter, parasites obtain their food from a living host, and holozoic organisms ingest solid food and digest it internally.

Saprotrophic nutrition- The mode of nutrition in which organisms derive nutrition from dead and decaying plants and animals. For example- Mushroom (fungus) feed upon dead and decaying plants and animalsParasitic nutrition is a mode of heterotrophic nutrition where an organism (known as a parasite) lives on the body surface or inside the body of another type of organism. The parasite obtains nutrition directly from the body of the host.Holozoic nutrition is the nutrition method in which animals take the energy containing organic materials, called food, into the gut. After digestion, this food can be absorbed into the body. When this food is decomposed in oxidation reactions, it can release energy to supply for daily uses.