Why are the cross sections of roots and stems of the vast majority of plants round?

In order to survive, all living things in the world always develop towards the most adaptable aspect of the environment, and the same is true for plants, whose stems are cylindrical (conical) and need for their own growth and reproduction.

Geometrically, when the circumference is the same, the area of the circle is larger than any other shape. Relatively few building materials are required. Therefore, the distribution of ducts and sieve tubes in round trunks, branches, and plant stems is much more than that of other shapes, so that the ability of round plant stems to transport water and nutrients is greater, which is more conducive to plant growth.

In addition, the volume of the cylindrical shape is also larger than that of other columns, it has a great supportive force, and when the branches are full of fruit, it can strongly support the crown of the tree, so that the trunk will not bend.

The cross-section of the plant's stem is rounded, which reduces damage, has greater mechanical strength, and can withstand the attack of wind. At the same time, due to the influence of wind, the degree of bending of plant stems is similar everywhere, regardless of which direction the wind comes from, the resistance of plant stems is similar, and plant stems are not easily damaged.

Also, the stems of the plant are relatively soft and can be shaken by the wind, so it is not easy to break.

I'll summarize the upstairs (you can't copy it all): because round things are very stressful, in order to bring the plant body closer to the light source, the roots and stems of the cylinder are used to support it.

1. Because of the cylinder.

The ability to resist breaking is relatively strong, and because the arc shape relieves the pressure of the oncoming wind, it can meet the strong wind blowing from all directions.

2. Because the distance from the center of the circle to the surroundings is about the same, it can facilitate the delivery of nutrients faster.

The cross-section of the rhizome is round, which ensures that the ducts and sieves in the rhizome are evenly distributed, ensuring that the nutrient content of the stem is the same, and promoting the normal growth and development of the plant. It can also increase the supporting force of the plant, as well as relieve the pressure of the air, and avoid the phenomenon of bending and deformation, damage and planting of the plant.

The reason why the cross-section of the rhizome of the plant is round.

The cross-section of the plant rhizome is round, which can ensure that the growth of the ducts and sieves in the rhizome of the plant is evenly distributed, and the number can be guaranteed to be about the same, and it can also increase the ability of the plant root system to absorb soil nutrients, as well as the ability of the stem to transport water and nutrients, which is conducive to better growth of the plant.

The cross-section of the rhizome of the plant is round, which can greatly increase the supporting force of the plant, ensure that the plant can play the role of support after growing fruit, and will not cause the stem to bend and deform due to the action of gravity, which will cause damage to the stem of the plant, easily infect the germs in the air, and affect the growth of the plant.

The cross-sectional area of the rhizome of the plant is circular, which can alleviate the air pressure caused by the wind, ensure that the plant can grow normally in the windward situation, and is not easy to be blown down by the wind, and the phenomenon of bending and growth of branches will not occur, hindering the normal process of transporting nutrients to the stem, resulting in malnutrition in the growth of the plant.

situation. The cross-section of the rhizome of the plant is round, which can ensure that the stem transports the same content of nutrients and water, because the distance from the circle to the center is the same, it can ensure that when the plant grows, the size and shape of the leaves, the thickness of the branch is the same, so as to ensure the neat and symmetrical plant shape and improve the ornamental value.

The vast majority of roots and stems are rounded in cross-section, as this ensures that the number of ducts and sieves is evenly distributed, and the ability of the stem to transport water and nurture the herbs is enhanced. This also provides some support and prevents the branches from bending. In addition, it relieves the pressure of the wind and ensures the normal growth and development of the plants.

The cross-section of the rhizome is round, which can promote the uniform distribution of the number of ducts and sieve tubes in the rhizome of the plant, ensure that the stem of the round plant has a stronger ability to transport water and nutrients, promote the better growth and development of the plant, and ensure that the nutrients transported by the plant can reach the leaves of the whole plant.

When the plant is full of fruits, the cylindrical stem can play the role of support, avoiding the effect of gravity, resulting in the phenomenon of bending the branch of the plant, and even causing the branch to be damaged, affecting the efficiency of plant fruit.

The round cross-section of the rhizome can relieve the pressure of the wind, ensure that the plant can grow in hail and wind, will not be bent or blown down by the wind, and will not cause the branches of the plant to grow twisted due to the wind in different directions, which can not ensure the normal growth and development of the plant, and will also affect the ability of the root system to absorb nutrients.

When the cross-section of the rhizome is round, the distance to the center is the same, and the speed and quantity of water and nutrients are the same, which will not lead to the growth of the plant, the leaf size and shape are different, and the length and thickness of the branches are different, which will greatly affect the appearance of the plant.

1. Because the cylinder has a strong ability to resist breaking, it can meet the wind blowing from all directions because the arc shape relieves the pressure of the oncoming wind.

2. Because the distance from the center of the circle to the surroundings is about the same, it can be convenient to transport nutrients faster in the wild.