Ans.
Because the process of Photosynthesis is triggered by the sun. The sun is stronger in summer and the temperatures are warmer - the cells metabolisim is increased
Green is the most efficient color for absorbing light, hence maximising the amount of light captured by chlorophyll for photosynthesis.
Trees do not have excess leaves in Summer,they have the number required to carry out their function.
Trees that keep their leaves in summer and lose them in autumn are deciduous.
If a tree loses all its leaves in the Summer the chances are it is dead. If it loses its leaves in Autumn, and is deciduous, then it will grow new ones in Spring.
trees make food during the summer from the sunlight they trap through the leaves and turn it into food, this is called photosynthesis but due to lack of sunlight during the winter, the trees store just the right amount of food to maintain the branches and the trunk but not the leaves so to save on food supply, the trees loose their leaves
In the summer a trees leaves are green... they don't turn colors until autumn
In the summer the leaves of most trees dry up. The sun is very hot at this time and causes excessive heat which dries the leaves.
Trees in the winter will have dead, red, yellow, or orange leaves most of the time. In summer, it'll be green.
Evergreen trees do not shed their leaves in the Autumn.
During summer, trees go through a process called photosynthesis where they absorb sunlight and carbon dioxide to produce energy in the form of sugars. They also grow and produce new leaves, flowers, and fruits during this time to support their reproductive cycle. Additionally, trees use summer as a time to store energy reserves for the coming winter months.
They contain chloroplasts which are green in colour.
The difference between deciduous trees and fir trees is that deciduous trees lose their leaves while fir trees do not. Deciduous trees usually lose their leaves during winter, but some in the tropics lose their leaves during the dry season.
Deciduous trees.