Question

Name the phylum of invertebrates that shows closed circulatory system mention two more specific feature of this phylum

Answer 1

Annelida shows closed circulatory system. Annelida includes Earthworm ( Pheretima), Centipede (Nereis), Leech (Hirudinaria). They have metameric segmentation that means, their body is segmented or divided in compartments from Inside as well outside. Also they have Parapodia (in Nereis) which helps in Respiration, Locomotion as well as Excretion.
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Answer 2

The phylum of invertebrates that shows the closed circulatory system is Annelida.

Specific feature of this Phylum:

• They have segmented body structure which is the important feature of the Annelids. It has bilaterally symmetrical body.  

• The locomotion of this phylum occurs by the use of Parapodia and Chitinous sitae.  

• The body of the annelids are “covered with a thin cuticle” and the respiration of this phylum occurs through the body surface.  

• Closed circulatory system has “closed network of blood vessels” through which blood flows through.