Why are flowers so red?

First, it is because the cell fluid of safflower contains glucose.

Anthocyanins that become.

When the cell fluid is acidic, the acidic anthocyanins will reflect the long red light wave and appear red, the stronger the acidity, the redder the color, which is the reason for the red flowers.

2. Whether it is safflower or red leaves, their cell sap contains anthocyanins turned from glucose. When the cell fluid is DAO acidic, the anthocyanins appear red, and the more acidic, the redder the color.

3. When it is alkaline, the anthocyanins are blue, and the alkalinity is stronger, becoming blue-black, such as black chrysanthemum, black peony, etc. And when it's neutral, it's purple. Thousands of purples and reds, red and blue, are all anthocyanins shown in different acid-base reactions.

In addition to safflowers, there are also yellow and orange flowers. Orange is similar to the color of citrus, pumpkin and other fruits, and the most typical is carrots, so the pigment that expresses this color is called carotene.

There is the size of the carotene to decide whether it is orange or yellow.

Because of the meaning of anthocyanins in flowers, flowers are red. Anthocyanins are a class of water-soluble natural pigments widely found in plants in nature, which are colored aglycones obtained by hydrolysis of anthocyanins. Most of the main coloring substances in fruits, vegetables and flowers are related to it.

Insects have a special habit of collecting nectar and pollinating, that is, they often only interview the flowers of the same plant. This habit is conducive to ensuring cross-pollination between the same plant and reproducing offspring. This fixes the characteristics of the species, including the color of the flowers.

We can imagine that if there was a plant with a reddish flower color, because the red flowers were more prominent, it was easy to attract the attention of insects, and there were more opportunities for pollination, and after countless generations of selection, over the years, insects would create purity for this plant.

1. Distinctive, bright red flowers. Insects are involved in natural selection, resulting in a variety of different plants and also a variety of different flower colors.

Why are flowers so red? In the end, thanks to manual selection. Natural selection is slow and takes a long time to show its effects.

Manual selection has greatly accelerated its process, enabling significant results to be achieved in a relatively short period of time. For example, peony, a wild native species created by natural selection for hundreds of millions of years, has a single-petaled flower and only one pink color. After artificial cultivation, just in the middle of the Northern Song Dynasty (11th century), it took decades to create dozens of varieties such as multi-leafed, thousand-leaf (double-petaled), louzi (protruding flower center), and pedicle crimson, flesh red, purple, dark purple, yellow, white, and so on.

Another example is the dahlias, native to Mexico, which have only eight red petals. Since the discovery of the Americas, it has only begun to be cultivated, and now there are thousands of varieties of different shapes and colors. Another example is the poppy, which has been cultivated to have various colors of red, yellow, orange, and white, but has never appeared blue.

At the end of the last century, the famous American horticultural breeder Pubank found a poppy with a layer of smoke on the petals, specially cultivated, and by the beginning of this century, it had bred a variety of blue poppies of different shades, adding new varieties to flower gardening.

The flowers are so red because:

1. Their cell fluid contains anthocyanins, which are red when acidic, and the stronger the acidity, the redder the color.

2. Acidic anthocyanins will reflect the red light waves in the sun, and we see the safflower.

3. The tissues of the flowers, especially the petals, are relatively tender, and the red light waves that reflect the most heat can play a protective role in preventing burns.

4. Flower red is a masterpiece of nature, and sometimes it is also the result of artificial cultivation.

When I came to the nursery, I never thought that I would fall into the warm encirclement of the triangular plum all at once.

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 so red!

Hope you are satisfied!

The red color of the flower is due to the fact that it contains pigments, and in the process of plant evolution, the flower has a variety of colors mainly to attract insects for pollination and fertilization, which is conducive to flowering, fruiting and reproduction. It is the result of the adaptation of plants to the environment.

First of all, it is made up of its material base. Whether it is a safflower or a red leaf, their cell fluid contains anthocyanins that are converted from glucose. When acidic, it is red.

The more acidic, the redder the color. When it's alkaline, it turns blue. The more alkaline it is, the more blue-black it will be.

So the flowers are determined according to the anthocyanins.

At the same time, it also needs to be explained by the principles of physics. The wavelength of red light in sunlight. Anthocyanins will reflect the long red light waves to our eyes, and we will feel that we are seeing bright red flowers.

It is necessary to use the principles of physics to explain the refraction of sunlight through a prism or water droplets, which is divided into seven colors: red, orange, yellow, green, cyan, blue, and violet. The color of light has different wavelengths, red wavelengths, violet waves are shorter. The acidic anthocyanins reflect the long red light waves, and we feel that it is a bright red flower.

There are also physiological needs. Light has a short wavelength and different heat content.

Why are flowers so red not only for photosynthesis? And he is a seed, and the essence of his substance is that some flowers are yellow, some are green, but some flowers are red, and this is his physics, the factor.

Because it has a pigment in it, it will show a variety of colors, and if it is a red pigment, it is a red flower.

Flowers turn red because of photosynthesis.

Because there is some red pigment in the flowers, this natural pigment.

Friends who eat, this is all because of the light, because of the influence of the halo.

Photosynthesis in plants is the most basic material metabolism and energy metabolism in the biological world.

In fact, the formation of flower color is the result of natural selection. In the natural world, white flowers are the most common, followed by yellow, red, blue, purple, green, orange and brown flowers, and black flowers are the rarest. This is the result of the natural selection of flowers in the process of biological evolution.

Black can absorb light waves and is susceptible to damage from light waves, so it is gradually eliminated by nature. In general, the petal cell fluid of flowers contains anthocyanins, carotenoids, lutein and flavonoids. The petals containing a lot of anthocyanins are all different in color between red, purple and blue, the petals containing a lot of lutein are yellow or pale yellow, the petals containing a lot of carotenoids are dark yellow and orange, and the other colors are shown by various flavonoid compounds.

The color of flowers is not static, many flowers from the beginning of the flowering stage to the last flowering stage, the color of the petals is always changing, some from light to dark, some from dark to light, but from light to dark mostly. For example, morning glory is red when it first blooms and turns purple when it decays; Apricot blossoms are red when they bud, gradually fade when they open, and finally approach white.

Because that's how the song is sung

The color of the flower is mainly determined by the pigment in the petals. There are many types of pigments, the most important of which are flavonoids and carotenoids. At present, more than 80 kinds of carotenoids have been discovered, and as many as five or six hundred flavonoids have been identified, and anthocyanins are also important members.

Different kinds of carotenoids can make flowers show different colors: some can make flowers show yellow (such as yellow roses); Some can make flowers appear red (such as tulips); Some can give the flowers an orange-red color (e.g., calendula).

Anthocyanins appear red in acidic solutions, blue in alkaline solutions, and purple in neutral solutions. This can be proved by experiments: if a red-colored morning glory is placed in dilute ammonia (alkaline solution), the flower color immediately changes from red to blue; If you put the blue morning glory in a dilute oxalic acid solution (acidic solution), the flower color will change from blue to red.

This is actually the discoloration reaction of the anthocyanins in the petals under different acid-base conditions.

The intensity of the flower color is related to the content of anthocyanins and carotenoids, which in turn is related to environmental conditions. In this regard, cotton is a striking illustration. When the flowers of cotton first bloom, the petals are mainly colorless anthocyanins (also called anthocyanins) and some yellow pigments, which combine to make the flowers milky white and slightly yellow.

When the cotton flowers open, if the sun is sufficient, the colorless anthocyanins are converted into anthocyanins, and then due to the enhancement of the respiration of the cotton plant, the acidic substances in the petals increase, so the flowers are red until they finally turn purple-red.

That's "why are the flowers so red?".