Question

Paragraph on insects full

Answer 1

Answer:

Insects are animals with chitinous exoskeleton and a three part body(head , thorax, abdomen).

There are millions of different species of insects found over the globe.

Insects can be divided into two types on the basis of the presence or absence of wings.

They are

• Apterygota (wingless)
• pterygota(winged ones)

examples : butterfly, cockroach

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Answer 2

Explanation:

It has long been recognized and documented that insects are the most diverse group of organisms, meaning that the numbers of species of insects are more than any other group. In the world, some 900 thousand different kinds of living insects are known. This representation approximates 80 percent of the world's species. The true figure of living species of insects can only be estimated from present and past studies. Most authorities agree that there are more insect species that have not been described (named by science) than there are insect species that have been previously named. Conservative estimates suggest that this figure is 2 million, but estimates extend to 30 million. In the last decade, much attention has been given to the entomofauna that exists in the canopies of tropical forests of the world. From studies conducted by Terry Erwin of the Smithsonian Institution's Department of Entomology in Latin American forest canopies, the number of living species of insects has been estimated to be 30 million. Insects also probably have the largest biomass of the terrestrial animals. At any time, it is estimated that there are some 10 quintillion (10,000,000,000,000,000,000) individual insects alive.