What are the common characteristics of insects, and what are the three major characteristics of inse

Insects generally have the following characteristics:

1) The body is clearly divided into three parts: head, chest, and abdomen, and each part is composed of several links. The head is formed by the healing of 6 links, and there are no traces of knots in the adult body. The thorax is composed of three segments: anterior, mid, and posterior thorax.

The abdomen consists of 3 12 segments, most of which are 10 11 segments.

2) Adults have three pairs of segmented feet, each on which they grow on three thoracic segments. (Animals with fewer than three pairs or more than three pairs of legs are not insects, which is the most obvious sign of identifying an insect.) ）

3) Most adults have two pairs of wings on their chests, some species of insects have evolved to have only one pair of wings (e.g., mosquitoes, flies), and some species of insects have completely degenerated wings (e.g., fleas, lice).

4) Insects have a pair of segmented antennae on their heads, which have the sense of touch and smell, and are used for pathfinding, feeding, direction identification, and courtship.

5) There is no bone in the body of the insect, and the adult has a shell on the surface of the body, which is called the "exoskeleton".

The three main characteristics of insects include:

1.The body is composed of several links, which are integrated into three body segments: head, chest, and abdomen.

2.The head is the center of feeding and sensation, with mouthparts and antennae, and often compound eyes and monoculars.

3.The thorax is the center of movement and support, and the adult stage has 3 pairs of legs, and generally 2 pairs of wings.

The above three points are the main characteristics of insects, in addition to this, insects have many other secondary characteristics such as body cavities and body segments, etc.

To put it simply, there are three main characteristics:

First, the body is divided into three parts: head, chest, and abdomen;

Second: generally there are 1 pair of antennae, 2 pairs of wings, 3 pairs of legs;

Third: the entire body cavity is the blood cavity.

The characteristics of insects, these insects in life, how much do you know.

Insects have the following common characteristics.

1. The body is segmented and merged into three parts: head, chest and abdomen.

2. The head has a pair of compound eyes and several monoculars, a pair of antennae and different types of mouthparts.

3. The thorax has three pairs of segmented feet and two pairs of wings (or one pair of wings, or no wings).

4. There are no appendages in the abdomen, and there are a pair of valves for breathing on both sides of each abdominal section. The caudal segment has an excretory and genital orifice.

5. There is chitin on the surface of the body.

The exoskeleton is used to protect internal organs and prevent water evaporation from the body. There is no bone in the body.

Structural characteristics of locusts.