Metamorphosis through which the insect develops by four distinct stages: egg, larva, pupa, adult. A type of metamorphosis in which an organism's transformation is so dramatic that it is difficult to recognize the relationship between the larva and adult form.
Photoperiodism is a plant's response to the number of hours of darkness in its environment. b. Plants that flower when exposed to less than 10–12 hours of darkness are called long-day plants.
