Question

The first pair of wings of Cockroach are
(a)Tegmina attached to mesothorax
(b)Elytra attached to the metathorax
(c)Tegmina attached to prothorax
(d)Tegmina attached to the metathorax

Answer 1

Hint: In cockroaches, the first pair of wings arise from the mesothorax and the second pair from the metathorax. Forewings are opaque dark and leathery and cover hind wings when at rest. The hind wings are transparent, membranous. they are used in flight.

Complete answer:
The Mesothoracic Forewings in cockroaches are called tegmina. The body of a cockroach is segmented. It is divisible into; head, thorax, and abdomen. They have a long antenna, legs, and flat extensions of the upper body wall. The thorax consists of three parts namely, prothorax, metathorax, and mesothorax. The first pair of wings in the cockroach arise from the mesothorax and the second pair from the metathorax. Forewings are called tegmina. tegmina are opaque dark and leathery and they cover hind wings when at rest. The hind wings of cockroaches are transparent and membranous. they are used in flight. The abdomen is the last part, and it contains reproductive organs. The number of abdominal segments is the same in both sexes. The 10th segment possesses a pair of jointed filamentous structures which is known as anal cerci.

Additional Information:
-Cockroaches are brown or black bodied animals. They belong to the class Insecta of the phylum Arthropod.
-Each segment in the thorax bears a pair of walking legs. Their head is formed by the fusion of 6 segments. The flexible neck facilitates its movement in all directions.
-The abdomen consists of 10 segments. In females, the 7th segment is boat-shaped. there is a pair of short thread-like anal styles in males.

So, the correct answer is ‘Tegmina attached to mesothorax'.

Note:
-In males, the genital pouch or chamber is located at the hind end of the abdomen.
- In females, the 7th sternum with the 8th and 9th forms a brood or genital pouch. Their anterior portion contains female gonopore.
- The male reproductive system is located on the 4th and 6th segments of the abdomen.