List of four main types of reptilia found in the world. The types are: 1. Dinosaur 2. Tortoises and Turtles 3. Lizards 4. Snakes. Reptilia: Type # 1. Dinosaur: The word ‘dinosaur’ is a blend of the Greek terms ‘deinos’ (meaning terrible) and saurus (meaning lizard). Richard Owen coined the term dinosaur. The dinosaurs were divided into two main types; [...]
In this article we will discuss about the General Characters and Classification of Phylum Platyhelminthes. General Characteristics of Phylum Platyhelminthes: (Gk. platys- broad or flat; helminworm) Gegenbaur (1859) placed flat worms in a separate group and gave the term Platyhelminthes. The phylum Platyhelminthes includes about 13,000 species. General Characters: 1. Habitat: The flat worms arc mostly parasites but some flat [...]
In this article we will discuss about the General Characters and Classification of Phylum Ctenophora. General Characteristics of Phylum Ctenophora: There are about 50 species of ctenophores. 1. Habitat: All ctenophores are exclusively marine. 2. Habits: They feed on plankton, swim by cilia. Power of regeneration is well marked. Bioluminescence (the property of living organism to emit light) is well-marked [...]