Q.

Which of the following features helps distinguish forewings of cockroach from hindwings?

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a

They arise from prothorax

b

They are transparent and membranous

c

They are useful for flight

d

They are opaque, dark and leathery

answer is D.

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Detailed Solution

The forewings (mesothoracic) are called tegmina. They are opaque dark and leathery and cover the hindwings when at rest. The hindwings (metathoracic) are transparent, membranous and are used in flight.
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