There is no sun at night, so how do sunflowers turn back?

The sunflower is a very special plant in nature, and its head turns with the direction of the sun. Normally, a sunflower rises with the sun during the day and changes direction as the sun sets. Some people may find it very puzzling, there is no sunlight in the night, so how does the sunflower rely to discern the direction and turn its head back?

In fact, the reason why the sunflower can automatically turn back when there is no sunlight is mainly because the sunflower itself rotates with the sun, mainly because it has growth cells that protect it from light, and these growth cells will automatically adjust the direction of the sunflower at night.

1. Positive sunflower is different from most plants in nature, and its biggest difference is that sunflower has positive energy. The so-called masculine means that the flowers of the plant will rotate with the rotation of the sun.

2. The reason why the sunflower rotates towards the sunSunflower is not a plant that changes with the sun at any time. Generally speaking, it is only when a sunflower blooms that its flower disc rotates with the rotation of the sun. The main reason why sunflowers rotate towards the sun is because there is a substance called auxin in the body of sunflowers.

This auxin can promote the growth of sunflowers to a certain extent, but it is very afraid of sunlight. So whenever the sun rises, these auxins regulate the sunflower's flower disc to help them block out most of the sun's rays. Since auxin often runs to the west side of the sunflower, the west side of the sunflower grows a little faster than the east side.

In the whole way, it will show that the whole sunflower grows towards the sun.

3. Summary: The positive behavior of sunflowers during the day is mainly due to the presence of auxin in plants. And at night there is no sun, so the auxin in the sunflower will also help the sunflower adjust its direction and help it turn back.

If there is no sun at night, how can the sunflowers turn back?

When there is no sun during the day (i.e. cloudy), the flower disc should gradually turn from west to sky, because by this time the growth hormone of the whole stem is already balanced.

At night it should be facing the sky.

Whether it's cloudy or sunny, it's all towards the sun, because although the clouds block the sun, the sun is still there.

It's the same, turning from east to west.

Why do sunflowers always run after the sun? What to do when it's cloudy, nature is amazing.

Sunflowers don't always follow the direction of the sun, because sunflowers only rotate when there is sun, and this phenomenon only exists in the budding stage, because sunlight can promote the growth, development and reproduction of sunflowers, and when the sunflower flowers are fully blooming and fruitful, the sunflowers are basically stable.

Sunflowers don't always follow the direction of the sun, because when there is sunlight, sunflowers will follow the sun, and after the sun goes down, the auxin of the sunflower will be redistributed and turned back to its original position.

Secondly, sunflowers only rotate with the sun when they are in the budding stage, because sunlight can promote the growth, development and reproduction of sunflowers, and when sunflowers are exposed to the sun, the rhizomes under the flower disc will drag the flower disc to bend to the side with the sun.

According to scientific research results, when the sunflower is fully open and fruitful, the sunflower is basically stable.

1.The opening is introduced.

Sunflowers are a very common plant that is able to rotate automatically with the position of the sun, thus remaining towards the sun, allowing the leaves to receive maximum sunlight exposure. But when night falls, which direction will the sunflowers continue to face? This article will answer this question.

2.Which direction do sunflowers face at night?

During the day, the sunflower rotates automatically with the position of the sun, usually towards the east sun. But when night falls, the sunflowers stop spinning because there is no guidance from the sun. Instead, it will maintain the direction it last faced the sun, i.e., towards the west.

3.The reason why sunflowers no longer rotate at night.

Sunflowers no longer rotate at night because their photosensitizers can only perceive light in the visible spectrum. And at night, there is only moonlight and starlight, which is not attractive to sunflowers. As a result, the sunflowers no longer rotate at night, but remain facing the sun and wait for the next morning's rays to shine.

4.Photosensitive pigments of sunflowers.

The photosensitizing pigments of sunflowers are mainly ultraviolet, blue, and red light. These colors of light play an important role in the growth and development of plants. Ultraviolet light and blue light can promote sunflower seedling growth and development, while red light plays an important role in the flowering and fruiting of plants.

5.The environment in which sunflowers grow.

Sunflowers are not too picky when it comes to the environment in which they grow. They can grow in fertile and well-drained places, so they are usually grown in the wild and in fields. In addition, sunflowers are also great for growing in a home garden or balcony, not only to beautify the environment, but also to absorb harmful gases and purify the air.

6.How to grow sunflowers.

The method of growing sunflowers is very simple, you just need to prepare the soil, sunflower seeds, and some basic farming tools. Start by burying the seeds in the appropriate soil, then watering and keeping them moist. Sunflowers love the sun, so they need to choose a sunny place to plant them.

After the sunflower grows, timely watering and fertilization are required to promote growth.

7.The role of sunflowers in human life.

In addition to the U.S. nuclear first environmental and air purification, sunflowers play many roles in human life. For example, the seeds of sunflowers can be pressed for oil to make edible or medicinal oils. In addition, the flowers and petals of sunflowers can also be used to make honey for bees.

Therefore, sunflower can be said to be a very useful plant.

8.Summary.

Although sunflowers no longer rotate at night, they are still able to bring many benefits to humans. By understanding the growth habits and planting methods of sunflowers, we can better understand this amazing plant and make better use of them in our daily lives.

The diversity of plants determines the size of photosynthesis respectively, all green plants need photosynthesis, along with the sun's east end and west fall, green plants require sufficient light according to the characteristics of carotene, in this regard, sunflowers are required by other green plants to have more light, in order to obtain sufficient light to terminate photosynthesis, has been facing the sun, prompting to follow the sun.

Whether the sunflower is facing the sun or not depends on what kind of growth and development link it is in. The sunflower is indeed facing the sun until it blooms from bud to the bottom of the pot. This is the leaf and the bottom of the pot follow the sunlight from east to west, this kind of following is not immediate, some experts and scholars have measured that the bottom of the pot is about 12 degrees to the outdated sunlight, that is, 48min.

After the sun goes down, the bottom of the pot gradually swings back again, and at about 3 o'clock in the morning, the house faces the east of China. Wait for the sun to rise again.

Once the bottom of the pot is lowered, it no longer rotates, but instead holds the house facing east. How can it be fixed to the east, and not downwards or some other direction? It can be said that this is also the result of the theory of natural selection, originally, the bee pollen of sunflowers is afraid of continuous high temperatures, and the ambient temperature exceeds 30 degrees, it will also be burned, and the house facing the east of China can prevent direct sunlight in the afternoon and reduce the source of radiation.

The bottom of the pot is exposed to the sun early in the morning, but it is conducive to drying the dew that condenses at night, reducing the probability of bacterial erosion, and in the cold morning, the sunflower pot floor is turned into a warm hut under the sunlight, which can digest and absorb insects where they stay and help pollinate.

The main reason for the rotation of the sunflower is this: it has a clever growth hormone on it. This type of growth hormone is quite distinctive:

It can accelerate or inhibit the growth of cells; When exposed to sunlight, it will also run into the backlight side; Characteristics of polar transport. When the sun rises from the east of China, the east side of the sunflower is reflected by the sun, and the backlight side of the young stem with lush branches and foliage spreads more growth hormone, and he stretches vertically fast, so the growth and development result is that the young stem bends towards the east side of the stunted growth, which is the top of the sunflower bends to the east in the morning.

As the sunlight moves in mid-air, the direction of sunlight is changed, and the bottom of the pot is often changed. When the sun sets, the sunlight disappears, and the uneven distribution of growth hormone in the body of the flowers and plants caused by the sunlight disappears. The unevenness of growth hormone caused by gravity is elevated as the main part.

More growth hormone is dispersed underneath the young stem of the sunflower, so the somatic cells on this side are lifted and elongated, causing the sunflower plant to straighten. It can be said that the straightening of sunflowers at night is a natural response to the force.

The auxin secreted by sunflowers is mostly concentrated in the backlit part and grows relatively quickly. The sunny part grows more slowly. The slower growing part is lighter, and the sunny situation is formed.

The concentration of auxin is low on the light-oriented side and high on the backlit side. The growing zone on the light-facing side grows slower, and the backlit side grows faster, resulting in a phototropic curvature of the stem.