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  • Trait common among earthworm, leech and centipede isOption: 1 Absence of legsOption: 2 Herm

Trait common among earthworm, leech and centipede is

Option: 1

Absence of legs


Option: 2

Hermaphrodite


Option: 3

Ventral nerve cord


Option: 4

Malpighian tubules


Answers (1)

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Nervous System and Sense Organs in Annelida:

  • The nervous system is well developed in annelids. They bear a nerve ring made up of fused ganglia around the pharynx. They have a ventral nerve cord. The nerve cord shows the branching of ganglia in each segment. 
  • In marine free-living annelids, tentacles, chemical receptors, statocysts and eye-spots are present.

 

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Non-chordates have a ventral nerve cord.

Posted by

Deependra Verma

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