Question

Как изменяется осенью окраска листьев у деревьев и кустарников

Answer 1

Листья опадают , дерево находится в состоянии покоя. Листья становятся красно-зеленого цвета, желто-зеленого...

Answer 2

Changes in Leaf Coloration of Trees and Shrubs in Autumn

In autumn, the color of leaves on trees and shrubs changes due to several factors. Shorter days and cooler temperatures trigger the process of leaf color change. As the days become shorter and the nights become longer, the production of chlorophyll in the leaves decreases. This reduction in chlorophyll reveals other pigments that were previously masked by the green color of chlorophyll.

The pigments responsible for the various colors seen in autumn leaves are carotenoids and anthocyanins. Carotenoids produce yellow and orange colors, while anthocyanins produce red and purple colors. These pigments are present in the leaves throughout the growing season, but they become visible when the chlorophyll breaks down in the fall.

The specific colors that appear in the leaves during autumn can vary depending on the type of tree or shrub. For example, maple trees often display vibrant red and orange colors, while aspen trees may turn a bright yellow. The combination of different pigments and their concentrations in the leaves contribute to the wide array of colors observed in autumn foliage.

Overall, the changing colors of leaves in autumn are a result of the natural processes triggered by environmental cues, and they contribute to the beautiful landscapes characteristic of this season.

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