What do you know from the fallen leaves? Contact the reality of life

From the fallen leaves, I know that autumn is coming, the weather is getting cold, the leaves are falling, and the geese are moving south.

Fallen leaves are a natural phenomenon. Generally, in autumn, most deciduous plants and trees begin to shed their leaves, and the leaves turn yellow and curly, falling from the trees and dancing with the wind, which also means that after late autumn, winter is coming. The north of China lies in the north temperate zone. In autumn, due to the low temperature, the rainfall decreases and the absorption of plant roots decreases.

The water and inorganic salts obtained by plants are greatly reduced, so that physiological activities such as photosynthesis, respiration and transpiration cannot be carried out normally. If leaves are left, a lot of water will transpiration, threatening the survival of plants. After cold and drought, new leaves will grow.

The significance of defoliation: it is an adaptation of plants to reduce transpiration, maintain water in the body and spend the cold and dry season. This habit is formed in the long-term evolution of plants. Whenever the drought or cold season comes, all the leaves die and fall off, leaving only branches, which are deciduous trees, such as peaches.

Mechanism of defoliation: defoliation can reduce transpiration and make plants survive in cold and dry seasons. This habit is formed in the long-term evolution of plants. Short sunshine accelerates the formation of abscission layer, and abscisic acid and ethylene increase, which can accelerate leaf abscission.

The significance of learning idioms:

Idioms are an important part of China traditional culture and the core of China language and culture. Learning idioms not only helps us to master the traditional culture of China, but also helps us to use the language more accurately, flexibly, vividly and richly, and can effectively express limited words with rich meanings.

Language is a tool for expressing ideas. Only by mastering the language can we express our thoughts accurately and flexibly, so as to communicate with others better. The accurate, flexible and vivid expression of idioms can make the ideas expressed more profound and concise, express our own ideas more accurately and make our language expression more powerful.