Q. The wings which are used for flying in cockroach are

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Solution:

The head of the cockroach is triangular in shape and it lies anteriorly at the right angle to the longitudinal body axis. Six segment fuses to form the head, and it shows excellent mobility in all direction due to its flexible neck. A pair of compound eyes are present in the head capsule. From the membranous socket lying in the front of the eyes. Prothorax, mesothorax and metathorax are the part of the thorax. By the short extension of the prothorax known as the neck, the head is connected with the thorax. A pair of walking legs arose from each thorax. From the mesothorax, the first pair of wings arises whereas the second pair arises from metathorax. The mesothoracic forewings called tegmina are opaque dark and leathery, and they cover the hind wings when at rest. The hind wings are used in flight and are transparent and membranous.