Question

Head of Cockroach lacks ___________.

• A. Cardo
• B. Gena
• C. Frons
• D. Trochanter

Answer 1

The correct option is D Trochanter

Cardo: Cardo is the basal segment that joins the head cavity of the cockroach to its secondary jaws, also known as the maxillae.

Gena: The cheek or gena forms the sclerotized area on each side of the head below the compound eyes extending to the gular suture. Like many of the other parts making up the insect's head, the gena varies among species, with its boundaries difficult to establish.

Frons: The Frons is that part of the head capsule that lies ventrad or anteriad of the vertex. The Frons varies in size relative to the insect, and in many species, the definition of its borders is arbitrary, even in some insect taxa that have well-defined head capsules.

Trochanter: The trochanter is an anatomical portion of the femur near its joint with the hip bone. The trochanter is the second (as counted from the body of the insect) segment in the leg of an insect and is located between the coxa and the femur.

So, the answer is 'Trochanter'.