48.Which of the following is true for photoperiodic? [A] It occurs only in plants [B] It is related to flowering in plants [C] It is related to feathers of animals [D] It is the reaction of organisms to the length of day or night Show Answer
Photoperiod (day length) plays an important role in regulating the timing of migration as changes in photoperiod influence temperature, rainfall, and ultimately primary productivity. Most plants respond to changes in photoperiod by producing seeds, new growth, and/or fruit at specific times of the year.
