In this article we will discuss about the Characters and Classification of Chordates. Characters of Chordates: All the chordates possess four diagnostic characters either in the embryonic or adult stage. 1. Notochord: It is a solid un-jointed, stiff but flexible rod-like structure situÂated on the dorsal side between the dorsal hollow nerve cord and the alimentary canal. 2. Dorsal Hollow [...]
In this article we will discuss about the General Characters and Classification of Phylum Arthropods. General Characteristics of Phylum Arthropods: Some of the general characters of Phylum Arthropoda are listed below: 1. Habitat: They occur on land, in the soil, in sea water, in fresh water and in the bodies of animals and plants as parasites. 2. Body Form: It [...]
In this article we will discuss about the General Characters and Classification of Phylum Cnidaria. General Characteristics of Phylum Cnidaria: Some of the important General Characters of Phylum Cnidaria are listed below: 1. Habitat: All are aquatic and are mostly marine, except a few like Hydra, are fresh water. 2. Body Form: Body form varies considerably. Many colonial cnidarians like [...]