لماذا يتغير لون أوراق الشجر في فصل الخريف؟

22 نوفمبر 2015

يعد ورق الشجر مصنع غذائي ذاتي بالاعتماد على البناء الضوئي حيث يستخدم الورق ضوء الشمس كأحد أهم أركان عملية البناء الضوئي ، ويعد تغير لون ورق الشجر من الأخضر للون مائل إلى الحمرة أحد أجمل المناظر الطبيعية، ويعود تغير لون الشجر كلما اقترب الشتاء إلى أن الشجر يستخدم ضوء الشمس في عمليات البناء الضوئي وعندما يقترب الخريف تبدأ الشجر بالاستعداد لفصل الشتاء حيث لا يوجد ضوء وذلك من خلال اختزان الغذاء في داخلها ( الغذاء ينتج من عملية البناء الضوئي)

معلومات علمية، معلومات ثقافية

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أخر المواضيع من قسم : معلومات علمية، معلومات ثقافية

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