Do plants have blood vessels? Do plants have a blood system?

Plants also have "blood vessels", and plants in general have two kinds of "blood vessels". One is called a "catheter" and the other is called a "sieve tube". Of course, the "blood" they transport is the water and nutrients necessary for plant growth.

The ducts extend in all directions, from leaves, buds, flowers to fruits. The ducts are very slender and have been measured to be only 200 400 microns in diameter in stems and 100 microns in leaf veins.

The cells that make up the ducts are all dead lignified cells, the living cells of stems and leaves surround the upper end of the duct, and the living cells of roots surround the lower end of the duct. When the huge root hairs enter the soil to absorb water and nutrients, the living cells of the roots have a kind of pressure, so they press the water and nutrients into the ducts. The stem and leaf cells are very thirsty, and their water absorption power is very strong, and they all absorb water from the cells next to them, and one by one the cells will continue to absorb water, so that a water absorption column is formed, which sucks up the water in the duct.

The sieve tube grows in the phloem.

, it specializes in transporting "grain". The leaves undergo photosynthesis.

After that, the nutrients produced are continuously sent to the organs of the plant through the sieve tube for the growth and development of the plant.

The nutrients are sent to the fruits and seeds for storage. In the busiest season, the speed of cotton and corn sieve transportation reaches 40-100 cm per hour, and the speed of delivery during the day is four times that of the night, otherwise, the nutrients will be "backlogged".

A natural plant, which can be called the "unclogging agent" of blood vessels, often soaked in water to drink, and the blood vessels pass to the end.

A natural plant, which can be called the "unclogging agent" of blood vessels, often soaked in water to drink, and the blood vessels pass to the end.

It should be a duct and sieve tube inside the stem of the plant.

Plants don't have blood in their bodies, so they don't have a blood system. They have only sieve tubes to transport organic matter and ducts to transport water and inorganic salts.

System: A general term for multiple organs in a biological organism that are capable of completing common physiological functions.

It is generally believed that plants do not have this level of systemPlants do not need several organs to complete one or several physiological functions, they can be done with one organ, so plants cannot be said to be systematic.

As for the vascular system, in fact, they all belong to the category of tissues, the vascular system is also called the vascular tissue system, including all the vascular tissues in the plant, which is the tissue system that runs through the whole plant and is related to the transportation, support and consolidation of the plant body with substances in the body, and is the product of the plant's adaptation to terrestrial life. The vascular tissue system is produced so that water, minerals, and organic nutrients can be transported and distributed rapidly within the plant, freeing the plant body from being highly dependent on the water environment.

If plants have a blood system, it is the material transport system of plants. Microtubule tissue.