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Q.

Select the incorrect statement regarding cockroach.

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a

Hypopharynx acts as a tongue.

b

Head is mobile in all directions due to flexible neck.

c

Antennae possess sensory receptors to monitor the environment.

d

Thorax consists of two pairs of wings all of which help in flight.

answer is D.

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Detailed Solution

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The first pair of wings arises from mesothorax and the second pair from metathorax. Forewings called tegmina are opaque dark and leathery and cover the hind wings when at rest (do not play an active role in flight). The hind wings are transparent, membranous and help in flight. 
 

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