Winter is here, the weather is cold, and we are very smart to create the environment to make us safe to pass the winter. The animals we are familiar with the autumn of our familiar animals, such as dogs, cats, rabbits, etc., and we have a lot of thin and thick ones. In winter, this thick fluffy fluff will be covered on the body, allowing them to spend the cold winter. Do you know how the plants are in winter?
1: Losing the baggage-drop the leaves
Plants are very sensitive to temperature changes, so the reducing temperature in winter will cause them to lead them to them Various chemical reactions began to occur in the body. The most common is the performance of the plants -the leaves are dropped. In order to avoid frost damage, plants often lose some of their own burdens, the most typical is the leaves.
At the time of the autumn wind, as the day was short, the plant felt the decline in temperature, so it began to transport the nutrients in the leaves on the branches. Promoting the leaves fall off. At the same time, this shed acid is also a kind of dormantin. After receiving an order from the plant, they are transported to the tip and side buds of the branch. Therefore, the growth points of the plants are suppressed, the breathing is weakened, and metabolism is stopped. Enter the dormant state. In winter, the plant \"moved\" the protein and starch hidden in the body cleverly. Under the action of enzymes, these proteins and starch will be hydrolyzed into soluble amino acids and sugars to increase the concentration of plant cell liquid and make them make it. It is not easy to freeze, and thus enhance the ability to resist cold.
Two: Conduct the body-regulate energy consumption and regulate water
In the body of the plant, a series of physiological reactions also occur. To the minimum, the strongest cold resistance is achieved to adapt to the rapid changes in the external environment. The cold resistance of plants is very strong, such as coniferous trees, which can resist the severe cold of minus thirty or forty degrees Celsius in winter. When winter comes, plants will reduce water absorption, thereby gradually decreased its water content. Therefore, most of the plants we see in winter are withered. This is exactly that they squeeze the moisture in the body and make self -protection measures, so that they can avoid freezing damage in winter.
Why are trees such as pine cypress still evergreen in winter?
Plants such as pine and cypress have a unique blade structure. Their epidermal cell walls are relatively thicker. The lower epithelial cells can be automatically closed to form a stratum corneum and build a \"copper wall and iron wall\" to avoid moisture distribution and resist winter cold Essence At the same time, due to the continuous decrease in temperature and the weakening of the life activities of the root system, the water content in their bodies gradually decreases, and the concentration of cell liquid gradually increases, thereby avoiding the possibility of cells frozen, so that they can be safe in winter (seem to be very advanced, obviously, it is obviously just that it is obviously that it is obviously that it is obviously that it is obviously that it is obviously that it is obviously that is obviously. Well, it has evolved).
Of course, in order to preserve the \"fire\", different plantsIt has also gradually formed their own different winter methods. For example, most of the annual plants will store the products of photosynthesis in the seeds before the frost. These seeds will spread through the wind and other objects to spread to offspring to reproduce offspring. And those perennial plants, such as pastoral grass and weeds, will store the nutrients of the photosynthesis products in their roots before the winter comes. When the spring flowers are blooming in the coming year, the strength is re -accumulated.
There are also some plants that do not store nutrients in seeds, nor stored in the root system, but store in the body to increase cell concentration and reduce free water to resist winter cold, such as winter wheat, rapeseed, rapeseed Waiting for the second -year -old plant, they accumulated a lot of sugar before winter to resist the severe invasion. I do n’t know if you have paid attention to the taste of frozen potatoes or sweet potatoes is often sweeter than ordinary. Why? This is because they accumulate a lot of sugar in the winter.
Do you feel amazing after reading these? By the way, this is our magical nature. I hope that everyone will continue to pay attention to the home of the plant. We will continue to bring you a fun article about plants.