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  •  Nervous system of vertebrates is very well developed and consists of Option: 1 Centraln

 Nervous system of vertebrates is very well developed and consists of 

Option: 1

Central nervous system


Option: 2

Peripheral nervous system


Option: 3

Autonomous nervous system 


Option: 4

All of these 


Answers (1)

 

 

Phylum Vertebrata - Characteristics Features -

Phylum Vertebrata - Characteristics Features:

  • They are also called higher chordates.
  • The notochord is present only during the embryonic stage. It is replaced by the vertebral column or spine. 
  • They possess a well developed central nervous system with a brain and spinal cord.
  • They possess a well-differentiated head. The brain is surrounded by cranium or skull.
  • They have a closed circulatory system with two, three, or four chambered heart.
  • They have well developed respiratory, digestive, muscular and endocrine system.
  • The phylum Vertebrata is divided into two divisions as follows:
  • Agnatha : They lack true jaws and paired appendages. They have only one important class ? Cyclostomata
  • Gnathostomata : They possess true jaws and paired appendages. They have two important superclasses ? Pisces and Tetrapoda
     

-

 

 

 Vertebrates have a well-­developed central peripheral and autonomous nervous system.

Posted by

Ramraj Saini

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