NEETZoologyStructural Organisation in Animals
Read the following statements regarding the thorax and appendages of a cockroach and choose the incorrect statement.
Options
- AThe thorax consists of three distinct segments: prothorax, mesothorax, and metathorax.
- BEach of the three thoracic segments bears a pair of walking legs.
- CThe hindwings arise from the metathorax, are transparent and membranous, and are used in flight.
- DThe first pair of wings, known as tegmina, arises from the prothorax and is opaque, dark, and leathery.
Correct answer
D. The first pair of wings, known as tegmina, arises from the prothorax and is opaque, dark, and leathery.
Step-by-step solution
The thorax of a cockroach consists of three parts: prothorax, mesothorax, and metathorax. Each of these segments bears a pair of walking legs. Cockroaches have two pairs of wings. The first pair of wings arises from the mesothorax, not the prothorax. These forewings are called tegmina and are opaque, dark, and leathery. They cover the hindwings when at rest. The second pair of wings arises from the metathorax. These hindwings are transparent, membranous, and are used in flight. Thus, the statement claiming that teg