Give reason
Sense organs of ascaris and tapeworm are not
developed
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ASCARIS belongs to Phylum --> Aschelminthes/Nematoda/Nelminthes
Tapeworm--> Platyhelminthes (Flatworms)
Both these phylums are one among the primitive phylum.
Sense organs are seen first time in ANNELIDA.
Phylums formed prior to annelida i.e.
- Porifera
- Cnideria, Coelentrata
- Platyhelminthe(flatworms)
- Aschelminthes(Nematodes)
Doesn't have sensory organs.
There's no such scientific for the non-formation of sense organs in this phylum.
It just is due course of evolution.
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