True or False: Insects have three different groups of indirect flight muscles housed inside the thorax.

Insects are known for their unique anatomical structure, particularly relating to flight. Unlike many other flying organisms, the majority of insects possess a specific arrangement of flight muscles that allows them to fly efficiently. They typically have two main types of flight muscles: direct and indirect.

Indirect flight muscles, which are located in the thorax, do not attach directly to the wings; instead, they alter the shape of the thorax itself to generate wing movement. This process is crucial for the up and down movement of the wings. The common understanding is that most insects possess two groups of indirect flight muscles (dorsal longitudinal and dorsoventral muscles) rather than three distinct groups.

Therefore, stating that insects have three different groups of indirect flight muscles is inaccurate, making the assertion false. Understanding the structure and function of flight muscles in insects is essential for recognizing their unique adaptations for flight.