Question

Thorax of a cockroach has ______ segments.
A. One
B. Two
C. Three
D. Four

Answer 1

Hint:The Thorax. A roach's thorax houses the attachments for three pairs of legs and, if the roach has them, two pairs of wings. Each of the three pairs of legs is named after the region of the thorax to which it attaches: Using its metathoracic legs, a roach can move about 50 body lengths in a second.

Complete answer:-A cockroach's chest appends three sets of legs. Every one of the three sets of legs is named after the locale of the chest to which it joins:
The prothoracic legs are nearest to the cockroach's head. These are the most limited legs, and they act as brakes when the cockroach runs. The center legs are the mesothoracic legs. They move to and fro to either speed the bug up or back it off.
The extremely long metathoracic legs are the cockroach's back legs, and they push the cockroach ahead.
These three sets of legs are generously extraordinary in lengths and capacities, however, they have similar parts and move a similar way. The upper bit of the leg, called the coxa, appends the leg to the chest. Different pieces of the leg inexact pieces of a human leg:
The trochanter demonstrations like a knee and lets the cockroach twist its leg.
The femur and tibia take after thigh and shin bones.
The sectioned bone structure acts like a lower leg and foot. The snare like bone structure additionally assists cockroaches with climbing dividers and walk topsy turvy on roofs.
The right answer is option"C", i.e., three segments

Note: A cockroach’ chest joins three sets of legs. Every one of the three sets of legs is named after the area of the chest to which it appends:
The prothoracic legs are nearest to the cockroach's head. These are the briefest legs, and they act as brakes when the cockroach runs. The central Legs are the mesothoracic legs.