The following points highlight the three different types of symbiosis seen in animals. The types are: 1. Mutualism 2. Commensalism 3. Parasitism. Symbiosis: Type # 1. Mutualism: Mutualism can be defined as a relationship between two different species in which both partners are benefitted or the association in which mutual metabolic dependency occurs. Mutualism is of two types: (i) Facultative [...]
In this article we will discuss about Phylum Rotifera:- 1. Taxonomic History of Phylum Rotifera 2. Characteristics of the Phylum Rotifera 3. Classification 4. Affinities. Taxonomic History of Phylum Rotifera: 1. Leeuwenhock (1703) first discovered rotifers with his newly invented microscopes. 2. Linnaeus and Lamarck regarded rotifers as protozoa. 3. Ehrenberg (1838) also placed rotifers in a distinct class under [...]
In this article we will discuss about of Phylum Loricifera:- 1. Features of Phylum Loricifera 2. Phylogeny of Phylum Loricifera 3. Phylogenetic Relationship. Features of Phylum Loricifera: 1. Phylum Loricifera are microscopic, un-segmented body, and about 200 to 300 µm in length. 2. Major part of the body called abdomen, covered by 6 overlapping protective plates comprising by rigid cuticle [...]