The life cycles of insects vary but most hatch from eggs. Insect growth is constrained by the inelastic exoskeleton and development involves a series of molts. The immature stages can differ from the adults in structure, habit and habitat and can include a passive pupal stage in those groups that undergo complete metamorphosis. Insects that undergo incomplete metamorphosis lack a pupal stage and adults develop through a series of nymphal stages.[7] The higher level relationship of the hexapoda is unclear. Fossilized insects of enormous size have been found from the Paleozoic Era, including giant dragonflies with wingspans of 55 to 70 cm (22–28 in). The most diverse insect groups appear to have coevolved with flowering plants.
Kerry J on 10 Nov 10On this site you will be able to plant a poppy (one symbol of remembrance) in a field to commemorate those who have been affected by war. Between November 11, 2010 and April 25, 2011, we hope that we will have 1000 commemorative messages 'planted' by students from across the globe.
