The phylum chordata is divided into different sub phyla. These are known as the urochordata, cephalochordate and vertebrata. They all have different features and they are described below. The urochordata…
The agnatha are also known as the jaw less vertebrates. They do not posses jaw and are primitive type of organisms. They have notochord throughout their life. They are cold…
These are also known as the jaw vertebrates. In this case the notochord is present in the embryo stage. It disappears in the adult stage and is replaced by the…
There are a lot of differences between a lamprey and hagfish. The lamprey occurs in the fresh water as well as act a marine. It acts both as a parasite…
There are a lot of differences between a Pisces and tetrapoda. The pisces include the fishes which have paired appendages known as pectoral and pelvic fins. They respire by gills…
These are also known as the cartilaginous fishes. They have an endoskeleton of cartilage and are cold blooded. The placoid scales form the exoskeleton and are dermal in origin. They…
These are also known as the bony fishes. They have an endoskeleton of cartilage which occurs in the embryo form and have a bony cartilage in the adult form. They…
The lung fish is divided into different classes. These include neoceratodus, lepidosiren and protopterus. All of them have a heart which is 3 chambered. The neoceratodus is known as Australian…
The amphibians are known as the two life organisms. They are the cold blooded animals who were first to evolve. The two life organism means they can live in water…
The amphibians are divided into different orders. This includes apoda, anura and urodela. The apoda are also known as gymnophiona. They have no limbs. The scales are present. They are…
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