Why are flowers red and why are flowers so red?

Flowers are not all red, and the most common species are white, yellow, and red. There is a selective relationship between insects and flowers. Bees, for example, are less likely to like yellow, but prefer red and blue.

There are some flowers that are yellow, orange-yellow, and orange-red in color due to the carotene contained in their petals. And because there are more than 60 kinds of carotene, the flowers containing carotene are also colorful. The white flowers have no pigment at all.

It appears to be white, and that's because the petals are filled with small bubbles. Pigments are present in the cell fluid of the petals. There are some flowers that are red, blue, or purple in color, and these flowers contain anthocyanins.

Anthocyanins turn red when they encounter acid, and turn blue when they encounter alkali.

Sunlight is refracted by prisms or water droplets, and is divided into seven colors: red, orange, yellow, green, cyan, blue, and violet. These seven colors have different wavelengths of light, red waves, and violet waves are shorter. The acidic anthocyanins will reflect the long red light waves, and when they reach our eyes, we will feel that they are bright red flowers.

Similarly, neutral anthocyanins reflect purple light waves, alkaline anthocyanins reflect blue light waves, and carotene has different components, so they reflect yellow light waves or orange light waves, respectively. White flowers do not contain pigments, but the tissues contain air, which reflects all the light waves. Some petals have more subtle and neatly arranged glass ball-like protrusions on the surface, which look like velvet, which can reflect light strongly like diamonds, and the colors are more vivid, such as some moon flowers.

In nature, there is a material cause for any phenomenon, and the color of flowers is no exception. For those red, yellow, and orange flowers, their petals contain a substance called "carotenoids". There are more than 60 types of carotenoids.

For those purple and blue flowers, their petals contain a substance called "anthocyanins". It is an organic pigment that changes with the temperature, pH and pH of the environment.

Not every flower is red ...

Contains anthocyanins. Anthocyanins turn blue when exposed to alkali and turn red when exposed to acid. Because the tissue fluid of the flower is acidic, it is red.

The story in Min and Zhejiang is like this: Du Juan and Xie Bao are sworn brothers, Xie Bao was sentenced to death for inadvertently injuring someone, and was put on death row, Du Juan brought wine and food to see him, Xie Bao falsely claimed to get a haircut, and asked Du Juan to sit in prison for him for a while, Du Juan readily agreed, but Xie Bao never returned. The cuckoo cried sadly for three days and three nights, and on the fourth day he was pushed out and beheaded.

After the cuckoo died, he became an unjust bird, crying from mountain to mountain, trying to find Xie Leopard, but in vain. Day after day, year after year, the blood and tears of blood are sprinkled in the mountains, and small trees grow wherever they drop, and when spring comes, blood-red flowers bloom, which is the origin of rhododendrons.

Another story goes like this: In ancient times, Du Yu, the emperor of Shu, was reluctant to leave his people after his death, and his soul turned into a kind of bird, called "Cuckoo Bird", often crying "It's better to go home!" It's better to go home!

Screaming so much that the mouth spits blood, and the blood drops on a kind of tree, it blooms blood-red flowers, and later generations call this flower "azalea" in order to commemorate Du Yu.

Legend is just ......Hehe......

Because anthocyanins are red, so flowers are red.

Both safflower and red leaves contain anthocyanins that are made from glucose in their cell fluid.

1. From an ecological point of view:

1. The internal factors (material basis) of the red: the needs of plant survival and development, the anthocyanin content and pH in the plant cell fluid, the stronger the acidity, the redder the color;

2. External causes of bonus: natural selection, artificial selection, safflower is the leader in the evolutionary process.

Second, the most effective pre-war words:

If you don't hit your face full of peach blossoms, you won't know why the flowers are red!

The reason is the same as why women are so beautiful.