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Morphology of Cockroach

Question

Common structure between earthworm and cockroach is
Ommatidia
Cocoon
Dorsal nerve cord
Ventral nerve cord

A

Cocoon

B

Ommatidia

C

Dorsal nerve cord

D

Ventral nerve cord

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Solution

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Earthworms form cocoon but cockroach does not form a cocoon in its life cycle.
The cockroach has a compound eye comprised of a number of ommatidia, but earthworm does not have eyes.
Both earthworms and cockroaches are invertebrates having a ventral solid nerve cord.

So, the correct answer is option D.

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