Why do plants sleep? Do plants sleep?

Aren't plants human, not animals, sleeping? Yes, plants also sleep. During the day, the leaves of the plant are all stretched out to receive the sun's rays, and at night, the leaves of the plant are gathered together, which is rest, that is, sleep.

Plants sleep to protect themselves from the cold and are a great way to protect themselves. Children, you might as well observe the leaves of the plants around you (flowers, plants, crops, and trees) to see if there are any changes during the day and night, okay? Are the leaves of plants flattened?

Throughout the natural world, most of their leaves are flattened, because the flat leaves have the largest contact area with the outside world, and can fully receive sunlight for photosynthesis. However, not all of the leaves of plants are like this, for example, the leaves of cedar trees and cacti that grow in arid and cold regions are needle-shaped; The anterior half of the leaf of Nepenthes is a bottle-shaped insect trap; In order to adapt to the climbing lifestyle, some of the leaflets of the pea gradually evolved into a tendril-shaped. Therefore, in nature, although the leaves of most plants are flat, due to the different living environmental conditions, there are also a small number of plants with strange leaves of other shapes.

Sleep is a movement of plants to protect themselves caused by their surroundings. During the day and night, there is a significant difference in light and darkness, the temperature is very different, and the air humidity is different, and in the process of long-term natural selection, plants gradually form adaptation to the environment.

Some plants will close their leaves or close their flowers at night, and this phenomenon is called plant sleep. Plants sleep because the temperature at night is much cooler than during the day. If you don't sleep, open the leaves and flowers, then water and heat are easily lost.

So they close the leaves and flowers to slow down the water and heat to close.

Yes. Plants also need sleep, for example, there is a legume called red clover, and in the sun, one sees three small spitts on each of its petioles in the air. When night falls, the three lobules fold together and they hang their heads and begin to sleep.

This is typical of plant sleep.

This change of day and night occurs in an approximate 24-hour cycle, even in complete darkness. Botanists call this phenomenon sleep movement. The biological clock in plants was first discovered from this phenomenon.

Plants sleep. 1. The night is colder than the day, and the leaves and flowers are closed at night to avoid the invasion of cold dew and frost.

2. Closure can reduce the evaporation of water and maintain proper humidity.

3. The leaves of tropical plants tend to close during the day, also to reduce the evaporation of foliar water.

4. Plants that bloom at night sleep during the day, which has the effect of preventing excessive water and body temperature and preventing insects from making trouble. In addition, there are explanations for changes in potassium concentration and circadian clock control.

All in all, plant sleep, like human and animal sleep, is a kind of self-protection ability, for its own better survival and development.

01 In fact, it is a normal reaction for plants to sleep to protect themselves and adapt to their surroundings. When the leaves of the plant are closed at night, it can reduce the loss of heat and the evaporation of water, so it has the effect of heat preservation and moisturizing. Nighttime temperatures are much cooler than during the day, and the flowers close at night, preventing the delicate stamens from being frozen.

Including humans, all animals need to sleep to regain their strength, so, do plants sleep? What is the purpose of plant sleep? In fact, plants also have to sleep, so let's take a closer look.

The tall acacia trees have many pinnate leaves, and when the sun comes out, they are relaxed; When night falls, the leaves fold in pairs. The leaves of the plant open and close at night, which is actually the external manifestation of the plant's sleep.

Beautiful flowers also need to sleep. Whenever the sun rises, the beautiful petals of some flowers will slowly relax and welcome the new day with a smiling face; And when the sun sets, it gathers its petals and falls asleep.

In fact, it is a normal reaction of plants to sleep in order to protect themselves and adapt to their surroundings. When the leaves of the plant are closed at night, it can reduce the loss of heat and the evaporation of water, so it has the effect of heat preservation and moisturizing. Nighttime temperatures are much cooler than during the day, and the flowers close at night, preventing the delicate stamens from being frozen.

Therefore, the sleeping of plants at night is also the result of natural selection in the process of evolution.