Sunflowers can rotate 360 degrees, why can't other plants? Sunflower is not surprising. Its seeds can be fried into melon or oil. It's very popular. This plant has an interesting function of always turning to the sun, which is very rare among plants. To understand this problem, we must first know how it turns to the sun. The principle of growth protein is that the stem tip grows after being irradiated by sunlight. The angle of light determines the direction of growth, and the light is smaller and the backlight is multi-faceted. One side of the backlight grows faster, causing the rod to bend in the direction of this light. It is precisely because of the growth characteristics that most plants have light. The green polo we put on the windowsill always extends towards the window. However, sunflowers can't explain the sun only by the effect of growth, because we haven't seen other plants rotate so obviously, although they also fall towards the sun.

This is because there is a substance that is closely related to growth, called phylloxetine, which is contrary to the growth of growth and inhibits cell growth. According to the botanist's experiment, when the light shines from one side, the concentration distribution of yellow oxygen in the leaves of sunflower seedlings is as follows: the concentration of yellow oxygen in the leaves is high, and the concentration at the edge of backlight is high. Low. This is the opposite of increasing concentration. So sunflower is a common effect. The common effect is growth, growth, growth, growth, growth. However, scientists have not stopped, because despite the dual role of healthy leaves, plants grow slowly. Can the growth of plant cells keep the rhythm of sunlight in the sky?

A new discovery has been made. The disk of sunflower is not like a chrysanthemum, but there is a wreath around the flower that blooms in the middle. Among them, these shadows with leaves are called tongue-shaped flowers, and there are very strong yellow flowers in the middle, called tubular flowers, which are rich in plant fibers. When the sun shines, the tubular flowers increase closely, and then the fibers shrink. This physical change causes the disk to turn to the sun. To prove this, scientists replaced the sun with copper welding, and then covered the brazier. Sunflowers will rotate with the brazier, which means that the heat source also affects the rotation of the disc.

More importantly, in the absence of light, the temperature of the disc will slowly slow down, the optical fiber of the tubular flower will no longer shrink, and the disc will return to its normal natural state facing the sun. In fact, in the whole growth cycle of sunflower, it does not rotate from beginning to end. When the disk is in full bloom, it is because of the center of the center. This phenomenon can also occur in other malnourished and stunted plants. In this growth cycle, the sun is facing the sun, the sunflower does not follow the sun for an instant, but the botanist's measures, its cauliflower is facing the sun, that is, 48 minutes, that is, there is a certain lag.