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  • Annelida is advanced over Nematoda in havingOption: 1 Closed circulationOption: 2 Metameric

Annelida is advanced over Nematoda in having

Option: 1

Closed circulation


Option: 2

Metameric segmentation


Option: 3

True coelom


Option: 4

All of these


Answers (1)

best_answer

 

 

Phylum Annelida-

  • The term ‘Annelida’ is derived from the latin term annellus, that implies small rings. This phylum contains the animals that are also called ‘Ringworms’.
  • The body of annelids is truly segmented because these segments or metameres are externally visible as annuli and internally as septation. 
  • Segmentation improves the movement and enhances the chances of survival by providing redundancy.
  • They are triploblastic and bilaterally symmetrical. 
  • They have a true coelom, i.e., they are coelomate. The mesoderm lines the cavity on both sides. 

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Closed circulation, metameric segmentation and true coelom are the advanced features shown by annelids.

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vishal kumar

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