Why do sunflowers rotate with the sun and bloom towards the sun?

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1. Reasons for occurrence

The reason why it rotates with the sun is due to physiological factors of its growth. Its branches contain relatively high levels of lutein, which is the main force for its growth. It is precisely the sunlight that stimulates the growth of this element, which slowly rotates from the back to the direction of the sun.

1. Reasons for the emergence

1. As early as the end of the 18th century, a reasonable explanation for this problem has been given. The reason is that plants are phototropic and have natural caused by reaction.

2. The main reason is because of the elements in the body Caused by - lutein, this substance will cause the sunflower to slowly rotate with the stimulation of the sun, moving in the direction of the sun. Because the density of the material on the side that does not see the light is relatively low, and the density of the material on the side that sees the light is relatively high, so after the sun rises from the east in the morning, it will gradually start to move, and when the sun sets in the evening , it will return to its original position. But usually, it stops rotating after it blooms, and it always faces the direction where the sun rises.

3. The earth's gravity is also responsible for this phenomenon. Inside, it becomes dark after the sun sets. Without light, the hormones in its body drop rapidly. The originally curved branches become upright, and then return to their original shape to grow. In this way, they grow back and forth, and follow Convert the angle in the direction of the sun.

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