Classes and General characteristics of Vertebrates
Class : Agnatha Endoskeleton is cartilaginous , The body is thin , long and eel-like , with no paired fins , The mouth is circular , funnel-shaped contains a rough tongue that provided with...
Tagged: Class Mammalia
Principles of living organisms classification and Taxonomic hierarchy
The cell is the building and functional unit of the living organism , Living organisms may be unicellular or multicellular , Although the similarity of all living organisms in their building and functional unit...