Arthropod class which is most diversified animal group

Question

Name the arthropod class which is most diversified animal group of planet? How can this evolutionary achievement be described?

Answer 1

Insects are animal group with most diversity of species. Almost 750000 insect species are recognized, about 55% of total already listed species of living beings (contrast with mammals, with no more than 4000 recognized species). It is computed but that the number of unknown species of insects might be over 2 million. The insect population on planet is estimated to be more than 10 quintillion (1000000000000000000) individuals.

The enormous evolutionary success of insects is because of factors such as: alimentary diversity and small size, making probable the investigation of numerous dissimilar ecological niches; wings which provided more geographic extend; tracheal respiration which gave them motor agility; high reproductive speeds with production of huge numbers of descendants.