Question

A cockroach has _____ pairs of legs.
a. 2
b. 3
c. 4
d. 5

Answer 1

Hint: Cockroaches are members of the Blattodea order, which includes termites, an insect group once considered distinct from cockroaches. The body consists of three main components: head, thorax, and abdomen. They have the same pairs of legs which are connected to the thorax as Class Hexapoda.

Complete answer:
> Option A is incorrect. The Diplopoda class is the Millipedes. They have regions of the head and the tail, too. Many of their "segments" on the trunk are actually two segments fused into one apparent segment together. Thus, it appears that millipedes have two pairs of legs per apparent segment.

> Option B is correct. Class Hexapoda is an insect- like butterfly that has 3 pairs of wings (6 wings) and two antennas and their body consists of three major regions: head, thorax, and abdomen.

> Option C is incorrect. Arachnids (such as spiders, scorpions, and mites) are the invertebrates normally with four pairs of legs connected to their heads and two pairs of appendages.

> Option D is incorrect. Crustaceans have a rigid external skeleton fused together, called an exoskeleton, which covers them like armour. They have five pairs of jointed legs, and in some species, they change the front pair of legs to form powerful pincers.
So, the correct answer is Option B.

Additional information:
Cockroaches are often nocturnal, social insects, gregarious or aggregate-inclined. Most cockroach species are around a thumbnail 's size but some species are larger. They have a pretty small head and a large, flattened body, with most species being reddish-brown to dark brown. They have wide eyes, two ocelli, long, flexible antennae. The outer surface has a durable exoskeleton that contains calcium carbonate and protects the inner organs and provides muscle attachment. It is wax-coated for repelling water. The wings are fixed to the second and third parts of the thoracic. The tegmina, or first pair of wings, is sturdy and defensive, lying on top of the membranous hind wings that are used in flight as a shield.

Note: Cockroach is a nocturnal insect that can spread a number of illnesses. Unlike mosquitoes, these are not direct disease vectors by mechanical transfer and reservoir action. Transmission happens indirectly, either through ingestion or through interaction with objects.