Which one of the following groups of three an | vedclass

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(C) $1$. $A$: Liver fluke (Platyhelminthes) is bilaterally symmetrical,but Sea anemone (Cnidaria) is radially symmetrical and Sea cucumber (Echinoderm

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Scorpion,Spider and Cockroach - Ventral solid central nervous system

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(C) $1$. $A$: Liver fluke (Platyhelminthes) is bilaterally symmetrical,but Sea anemone (Cnidaria) is radially symmetrical and Sea cucumber (Echinodermata) shows pentamerous radial symmetry in adults. Thus,this is incorrect.$2$. $B$: Centipede and Prawn (Arthropoda) have jointed appendages,but Sea urchin (Echinodermata) does not. Thus,this is incorrect.$3$. $C$: Scorpion,Spider,and Cockroach all belong to the phylum Arthropoda. $A$ characteristic feature of Arthropods is the presence of a ventral solid central nervous system. Thus,this is correct.$4$. $D$: Cockroach and Locust (Arthropoda) show metameric segmentation,but Tapeworm (Platyhelminthes) shows pseudometamerism (proglottids),not true metamerism. Thus,this is incorrect.

Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?

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