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What do the broken and connected threads of the lotus root refer to?

The threads connected by the broken lotus root refer to the duct cells of the lotus root.

After the lotus root is cut off, some tissues similar to human blood vessels will appear, called ducts. The duct of the lotus root is spiral-shaped and usually coiled. After breaking, it will be stretched up to 10 centimeters because it has a certain elasticity. When the lotus root is broken, the spiral conduits are not really broken, but are stretched like springs, forming many filamentous substances, so the phenomenon of "lotus roots are broken and connected" occurs.

Function of lotus root:

There are two types of roots of lotus root, one is the tap root and the other is the adventitious root. The taproot is formed from the radicle of the seed after the lotus seeds are sown, but the taproot is not developed. What plays a role in the growth process are adventitious roots. The adventitious roots are in the form of whiskers and grow in bunches around the underground stem nodes. Generally, there are 6 bundles of adventitious roots on each stem node, with a total of about 130 to 180 roots, and each root is about 8 to 14 cm long.

Many lateral roots grow densely on the adventitious roots. Adventitious roots can be continuously renewed. Young roots are white or lavender; old roots are yellowish brown or dark brown. The developed adventitious roots mainly play the role of absorbing water, nutrients, and fixing and supporting the plant.