植物晚上会“睡觉”吗？（把自然讲给你听）

Core Insights - The "sleep" behavior of plants is regulated by an internal biological clock, showcasing their unique adaptation to the environment [1][2] - This rhythmic behavior is common among both wild and cultivated plant species, indicating a widespread evolutionary strategy [1] Group 1: Plant Adaptation Strategies - During the day, plants open their leaves to maximize sunlight absorption, while at night, they close their leaves to reduce transpiration and water loss, enhancing survival [1] - The nighttime closure of leaves helps mitigate damage from temperature drops and reduces the risk of herbivory [1] - Some flowers open during the day for pollination and close at night to protect reproductive structures from low temperatures and moisture loss [1] Group 2: Biological Clock Mechanism - Plants utilize photoreceptors and other sensors to detect light and temperature changes, followed by internal biological clock calibration [2] - The core oscillator within plant cells consists of a complex network of genes and proteins that regulate physiological activities, such as controlling stomatal opening for optimized photosynthesis and water use [2] - The intricate regulatory mechanisms of the biological clock enable plants to adapt to diurnal rhythms and respond flexibly to environmental changes, enhancing their competitive survival [2]