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Following are the important characteristics of Nematoda:
1.Their body is bilaterally symmetrical and triploblastic.
2.There are cylindrical in shape.
3.They are sexually dimorphic.
4.They exhibit tissue level organization.
5.They are devoid of the circulatory system and respiratory system.
6.They are free-living or parasitic.
7.Parasitic nematodes cause diseases in the host.
8.Fertilization is internal and reproduction is sexual.
9.Their cuticle moults periodically.
10.They consist of chemosensory organs called aphids situated on the lips.
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