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 Notochord is present throughout the life in 

Option: 1

Fish


Option: 2

 Leech


Option: 3

 Amphioxus


Option: 4

Amphibia


Answers (1)

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Phylum Cephalochordata - Characteristics Features -

  • The animals of Cephalochordata have notochord, dorsal hollow nerve cord, pharyngeal gill slits and post-anal tail in the adult stage. The notochord is present in the head region. Hence, their name is cephalochordata.
  • They possess a fish-like segmented body.
  • They do not have a distinct brain.
  • They are filter feeders. 
     

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The animals of Cephalochordata have notochord, dorsal hollow nerve cord, pharyngeal  gill slits and post­anal tail in the adult stage. The notochord is present in the head region.  Hence, their name is cephalochordata.

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avinash.dongre

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