Question

Insects have _______ pairs of jointed legs.
A. Six.
B. Four.
C. Three
D. Five.

Answer 1

Hint: Arthropods have jointed bones, and their cuticle is composed of chitin, which is also mineralized with calcium carbonate. The body plan of an arthropod is made up of segments, each with a pair of appendages. They must go through moulting, which involves shedding their skin, in order to continue developing. Arthropods have a body and an external skeleton that is bilaterally symmetrical. Wings are present in some insects.

Complete answer:
Option A: Insects do not have six pairs of jointed legs.
So, option A is incorrect.
Option B: Insects do not have four pairs of jointed legs.
So, option B is incorrect.
Option C: Insects have six legs (three pairs of jointed legs) and four wings, on average (two pairs).
The fore-, mid-, and hind legs are the three pairs of legs that an insect has, one pair on each of the three segments of the thorax. Any of the four pairs of legs can be extensively modified and are essential for locomotion, prey capturing, mating, and other activities. Fortunately, like mouthparts, all insect legs have the same essential components. Coxa, trochanter, femur, tibia, and tarsus are the portions of an insect leg that go from proximal (toward or toward the body) to distal (away from the body). One or two claws of the kind used to grip the substrate are nearly always present on the tarsus.
So, option C is correct.
Option D: Insects do not have Five pairs of jointed legs.
So, option D is incorrect.

Hence, Option C is the correct answer.

Note:
The haemocoel is an arthropod's internal cavity that houses its internal organs and circulates its haemolymph (blood-like fluid). It has an open circulatory system. Arthropods' internal organs, including their exteriors, are made up of recurring segments. Their nervous system is "ladder-like," with paired ventral nerve cords that extend along each segment and form paired ganglia. Their brains are formed by fusion of the ganglia of these segments and encircle the esophagus. Their heads are formed by fusion of different numbers of segments, and their brains are formed by fusion of the ganglia of these segments. Arthropods' respiratory and excretory systems differ based on their habitat as well as which subphylum they belong to.