HORTICULTURE

Detailed explanation-1: -The summer sunlight triggers the leaves to keep making more chlorophyll. But trees are very sensitive to changes in their environment. As summer fades into fall, the days start getting shorter and there is less sunlight. This is a signal for the leaf to prepare for winter and to stop making chlorophyll.

Detailed explanation-2: -As the season changes, temperatures drop and days get shorter. Trees get less direct sunlight, and the chlorophyll in the leaves breaks down. The lack of chlorophyll reveals yellow and orange pigments that were already in the leaves but masked during the warmer months.

Detailed explanation-3: -As night length increases in the autumn, chlorophyll production slows down and then stops and eventually all the chlorophyll is destroyed. The carotenoids and anthocyanin that are present in the leaf are then unmasked and show their colors.

Detailed explanation-4: -Leaves are green in colour because of the presence of green colour pigments within the plant cell called chlorophyll.

Detailed explanation-5: -The most common leaf colors of fall are red, yellow, and orange. Some tree species can express several of these colors simultaneously as the season progresses.