2. vertebrates -
• Higher animal,
• Presence of vertebral column,
• Craniata also called,
• Having “notochord”,
• classification - Piceses, Amphibia, Reptilia, Aves,
Mammalia
3. Vertebrates -
• They having distinct head with differentiated tubular brain
and three pair of sence organ (nesal optic otic i.e earing ),
• body divided into trunk aand tail region,
• Presence of pharyngial gills indicated high metabolic rate,
• large ceolom present,
4. • Aproximately 45000,living sp. constitute in vertebrates,
• Vertebrate faunas are important to human for foodand
recreation.
5. Origin of Vertebrates
• In order to give a broad and comparative view of their life
histories, the vertebrates are subdivided here into major
groups based on morphology:
1. The cyclostomes (jawless fishes),
2. The chondrichthyes (cartilaginous fishes),
3. The teleostomes (bony fishes),
4. and the tetrapods.
