Why don t sunflowers face the grass and not the sun?

That's when the sunflower matures, and the auxin stops growing, so it no longer faces the sun, but the ground.

Sunflower auxin is mainly formed at the tip of the stem and transported towards the base. The distribution of auxin is affected by light: low auxin concentration on the light-oriented side and high on the backlit side.

In this way, the growing zone on the light-facing side grows slower and the backlit side grows faster, resulting in a phototropic bend of the stem.

In recent years, with the improvement of the level of science and technology, scientists have made new additions to the explanation of the sunflower phenomenon. They found higher concentrations of lutein oxide from the growing zone of the stem of the sunflower. This substance, contrary to auxin, inhibits cell elongation.

Scientific experiments show that when the light is irradiated from one side for 30 minutes, the concentration distribution of lutein on both sides of the sunflower seedling growth area is as follows: the concentration of lutein on the light-oriented side is high, and the concentration on the backlit side is low.

This is the opposite of the concentration distribution of auxin. So, the positive aspect of sunflower also has a lot to do with lutein oxide. In other words, the sunshine of sunflowers is the result of the combined action of auxin and lutein oxide.

Because the auxin in the receptacle of the sunflower is backlit, the stem on the backlit side grows faster, and the stem bends towards the light source.

Sunflowers are named because the top of the young plant in the early stage of growth and the young flower disc in the middle stage rotate very clearly with the sun. It is believed that sunflowers are only related to light exposure, but in fact, they are also closely related to gravity. 

As far as I know, in the Common Era. Years ago, sunflowers have worshipped the sun, and they have been like this for generations, watching the sun rise every day until it sets. However, due to the accumulation of swaying exercises, their spine has been seriously damaged, so they have to lower their heads.

The moment they lowered their heads, they realized that there were some plants that had been worshipping them as much as they had worshiped the sun.

The head is too heavy and bent, so towards the grass.

The sunflower seeds are ripe and can be picked and fried.

Sunflower is not sunny because the light directionality is not strong, and the auxin secretion in the sunflower plant is relatively uniform, and does not show obvious phototropism. As the sunflower disc increases, the repeated turning of the sunflower to the east in the morning, upright at noon, west in the afternoon, and upright at night gradually stops, and the orientation of the flower disc does not change except for the more and more obvious hanging head. <

Sunflower is not sunny because the light directionality is not strong, and the auxin secretion in sunflower plants is relatively uniform, and does not show obvious phototropism. With the increase of the sunflower flower disc, the auspicious and cyclical turning of the sunflower in the morning to the east, the noon upright, the lower acacia to the west in the afternoon, and the upright at night gradually stopped, and the direction of the flower disc did not change except for the more and more obvious hanging head.

The auxin of sunflower is mainly formed above the tip of the stem and is not transported to the base. The distribution of auxin is constantly affected by light: auxin concentrations are quite low in the growing zone on the light-oriented side and quite high on the backlit side.

As a result, the growth zone on the light-facing side is very slow, and the backlit side grows very quickly, so the stem is bent towards optical rotation.

In recent years, with the continuous improvement of the level of science and technology, scientists have also made new relevant supplements to the explanation of various phenomena of sunflowers. Not only did they find a new high concentration of lutein in the stem and leaf growth area of the sunflower. This substance, in contrast to auxin, prevents cell elongation.

Scientific experiments have continuously shown that when the light is irradiated from one side of the stem for 30 minutes, the concentration of lutein on both sides of the sunflower seedling growth area is mainly distributed as follows: the concentration of lutein on the light-oriented side is quite high, and the concentration on the backlit side is quite low.

This is the opposite of the correlation law of auxin concentration distribution. In this way, the positive aspect of sunflower is also very related to lutein oxide. That is, the sunshine of sunflower is an important result of the joint action of auxin and xanthrophyllin.

What is the sun-rushing posture and the sun-rushing brother for the scattered brother?

Because the cells on the stem under the large flower plate of the sunflower grow slowly on the sunny side, and the side that sells silver on the back of the sun grows faster, so that the stem on the backlit side is long, and the stem is short in the middle of the stem on the smooth side, the stem is bent, and the large flower disc turns towards the sun.