How does plants detect seasonal changes?

Plants detect seasonal changes primarily through changes in light quality, quantity, and duration, which they sense using photoreceptors like phytochromes and cryptochromes. These receptors respond to variations in daylight, triggering physiological responses such as flowering and leaf senescence. Additionally, temperature changes can also influence plant behavior, as certain species require specific temperature thresholds to initiate growth or dormancy. Together, these cues help plants adapt their life cycles to seasonal conditions.