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Question

Male cockroach differs from female cockroach in having

A
Antennae
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B
Labrum
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C
Maxillae
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D
Anal styles
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Solution

The correct option is D Anal styles
Antennae is a sensory structure, labrum and maxillae are parts of the mouth, therefore present in both male and female. Cockroaches are dieocious and dimorphic. The male cockroach has a pair of anal styles-filamentous structures that originate from the 10th segment and act as sensory organs.
So, the correct answer is 'Anal styles'

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