The filaments in the coupling are the conduit tissue. It is related to the following:

1, the conduit cells will form many longitudinally connected channels during the growth process, these channels are called conduits. Water and nutrients can flow rapidly through the conduits, thus transporting water and nutrients from the roots to all parts of the plant. The size and distribution of conduits varies depending on the plant species, with some plants having larger conduits that can form wider networks of pipes.

2. Sieve tube cells, on the other hand, are thin-walled cells that are connected to each other, and the network they form is known as the sieve tube system. The sieve tube system is found mainly in the phloem of plants and is responsible for transporting organic matter from leaves to other parts. Organic matter is transported in the sieve tubes by a pressure difference that is created by the osmotic pressure of the cells surrounding the sieve tubes.

3. In addition to the ducts and sieve tubes, there are a number of other types of transport tissues, such as striated veins and intercellular connective filaments. Striated veins are thin-walled cells that form lateral connections that help water and nutrients move laterally through the plant. Intercellular junctions, on the other hand, are connecting channels between cells, and they allow for the exchange of materials and the transfer of information between cells.

Relation of Lotus Roots and Filaments

1. The origin of this idiom has to do with the plant lotus root, a plant that grows in water, whose rhizome is the root of lotus root, which is often eaten by people, and its filaments, which are the fibers connecting the individual lotus root joints. When people cut the lotus root with a knife, although the root is separated, the silk is still connected to the individual root joints, making people feel an unbreakable emotion.

2. The emotion expressed in the idiom of "the lotus root is cut off and the threads are connected" is a feeling that it is hard to let go of and is constantly involved. It tells us that even though on the surface it seems that the relationship has been severed, in reality the feelings have not completely disappeared and there is still some connection and influence. This emotional state is especially obvious for the relationship between a man and a woman.

3. In addition to the relationship between men and women, the idiom of "lotus root breaks the thread" can also be used to describe the emotional state between friends. Sometimes there are conflicts or disagreements between friends for some reasons, resulting in what appears to be a break in communication. But in fact, the friendship between them has not completely disappeared, and they still pay attention to each other's life and situation in their hearts.