Which one of the following groups of three an | vedclass

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(A) The correct option is $(a)$.$1$. Scorpion,spider,and cockroach all belong to the Phylum $Arthropoda$. $A$ characteristic feature of arthropods is

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$(a)$

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(A) The correct option is $(a)$.$1$. 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,which consists of a dorsal brain connected to a double ventral nerve cord.$2$. In option $(b)$,$Taenia$ (tapeworm) is a Platyhelminth and does not show metameric segmentation.$3$. In option $(c)$,sea anemone (Cnidaria) exhibits radial symmetry,not bilateral symmetry.$4$. In option $(d)$,sea urchin (Echinodermata) exhibits radial symmetry in adults and lacks jointed appendages,which are characteristic of arthropods.

$Option$	Animals	Morphological features
$(a)$	Scorpion,spider,cockroach	Ventral solid central nervous system
$(b)$	Cockroach,locust,Taenia	Metameric segmentation
$(c)$	Liver fluke,sea anemone,sea cucumber	Bilateral symmetry
$(d)$	Centipede,prawn,sea urchin	Jointed appendages

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Which of the following is properly matched?

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