Which of the following characteristics is mainly responsible for the diversification of insects on land ?
Exoskeleton
Eyes
Segmentation
Bilateral symmetry
The diversity of insects on land is primarily due to exoskeleton features. The exoskeleton is the most essential adaption. Insect exoskeletons are constructed of chitinous material, which keeps their skin from drying out. Aquatic organisms were once common among ancient insects. Several of them evolved as well as adapted to life on land, resulting in the diversification of land insects. Chitin aids in the preservation of insect skin moisture.