Take photographs of different animals insects and give their abundance

Answer:

Insects also are the most highly developed class of invertebrate animals, with the exception of some mollusks. Insects such as the bees, ants, and termites have elaborate social structures in which the various forms of activity necessary for the feeding, shelter, and reproduction of the colony are divided among individuals especially adapted for the various activities. Also, most insects achieve maturity by metamorphosis rather than by direct growth. In most species, the individual passes through at least two distinct and dissimilar stages before reaching its adult form.

In their living and feeding habits, the insects exhibit extreme variations. Nowhere is this more apparent than in the life cycle of various species. Thus the so-called 17-year locust matures over a period of 13 to 17 years. The ordinary house fly can reach maturity in about ten days, and certain parasitic wasps reach their mature form seven days after the eggs have been laid. In general the insects are very precisely adapted to the environments in which they live, and many species depend on a single variety of plant, usually feeding on one specific portion of the plant such as the leaves, stem, flowers, or roots. The relationship between insect and plant is frequently a necessary one for the growth and reproduction of the plant, as with plants that depend on insects for pollination. A number of insect species do not feed on living plants but act as scavengers. Some of these species live on decaying vegetable matter and others on dung or the carcasses of animals. The activities of the scavenger insects hasten the decomposition of all kinds of dead organic material.

Certain insects also exhibit predation or parasitism, either feeding on other insects or existing on or within the bodies of insect or other animal hosts. Parasitic insects are sometimes parasitic upon parasitic insects, a phenomenon known as hyperparasitism. In a few instances an insect may be parasitic upon a secondary parasite. A few species of insects, although not strictly parasitic, live at the expense of other insects, with whom they associate closely. An example of this form of relationship is that of the wax moth, which lives in the hives of bees and feeds on the comb that the bees produce. Sometimes the relation between two species is symbiotic. Thus ant colonies provide food for certain beetles that live with them, and in return the ants consume fluids that have been secreted by the beetles.

Social Insects

One of the most interesting forms of insect behavior is exhibited by the social insects, which, unlike the majority of insect species, live in organized groups. The social insects include about 800 species of wasps, 500 species of bees, and the ants and termites. Characteristically an insect society is formed of a parent or parents and a large number of offspring. The individual members of the society are divided into groups, each having a specialized function and often exhibiting markedly different bodily structures. For discussion of the organization of typical insect societies, see articles on the insects mentioned above.

Although the superficial appearance of insects is extremely varied, certain characteristics of their anatomy are common to the entire class. All mature insects have bodies composed of three parts: head, thorax, and abdomen (the abdomen and thorax are not always differentiated in larvae). Each of these parts is composed of a number of segments. The head is made up of several segments, usually so fused they are scarcely differentiated. On the head are two antennae; a pair of jaws, or mandibles; a pair of auxiliary jaws, or maxillae, that in turn bears a pair of palps; and a fused second pair of accessory jaws, the labium, that also bears a pair of palps. The antennae, usually attached to the anterior part of the head, are segmented. In some insects, the antennae carry organs of smell as well as organs of touch. The mandibles are large, heavy jaws on either side of the mouth. They close horizontally and are used for grasping food and crushing it. The maxillae, or inner jaws, are lighter in structure. The mouths of many insects are adapted for piercing and sucking rather than for biting. The eyes of the insect are also situated on the head.