Why do leaves change their colour in the fall season?


The leaf's colour change as per season, when temperatures drop and days become shorter, leaves can not get enough sunlight those days, and the lack of chlorophyll creates yellow and orange pigments of photosynthesis. They are released in chloroplasts in photosynthetic tissues of the leaves.

Leaf colour pigments:

1.       Chlorophyll: Green.

2.       Xanthophyll: Yellow.

3.       Carotene: Gold, Orange.

4.       Anthocynin: Red, Violet


Which are mainly three pigments found in Plants. In mainly sunny countries plants' leaves are in green colour. When windy and cold countries plants are in different colours like yellow and orange.

 Cold days and nights: Well days become shorten and the temperature is low in autumn, the air becomes colder on those days, and chlorophyll breaks down. When the green is gone, yellow and orange pigments are revealed.

 AS summer starts into fall, it is less sunlight and the days start getting shorter, which is a sign of the leaf for preparing winter.

 In the presence of more light, the sugars in the leaves form a red colour.

 There is a miracle in the forest, which is a colour change in most leaves. They come in shades of yellow the green.

 If the night period is increased in the autumn, the chlorophyll production system becomes law and they cannot make food due to less light, eventually, all the chlorophyll is damaged.

 Tulip starts to change as early as August, followed by the maple trees, which come in oranges and yellow in a few regions.

 Beach trees are the last to change their colours.