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  •  Which of the following statements about circulatory system of vertebrates are true? Option: 1</

 Which of the following statements about circulatory system of vertebrates are true? 

Option: 1

. Closed type 


Option: 2

Lymphatic system present 


Option: 3

. Erythrocytes and haemoglobin present 


Option: 4

All of these 


Answers (1)

best_answer

 

 

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
     

- 

 

 The circulatory system of vertebrates is of closed type. They have a lymphatic system.  Erythrocytes and haemoglobin are present.

Posted by

Ajit Kumar Dubey

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