What is common character between Pheretima and Periplaneta?

Chitinous exoskeleton

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Dorsal nerve cord

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Ventral nerve cord

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Pseudocoelom

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Solution

The correct option is C Ventral nerve cord
Pheretima posthuma is a common earthworm that belongs to the phylum Annelida. Periplaneta is the common cockroach and belongs to the phylum Arthropoda. Both of these animals have ventral nerve cord. Both of them have true coelom. Chitinous exoskeleton is found in arthopod.

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