Why do mimosa plants shrink?

Article Catalog

1. Principle

2. Physiological reaction

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The shrinkage principle of Mimosa is that the unique organ at the base of the petiole contains sensitive thin cells in the pillow, which will respond to a slight vibration or stimulation from the outside world. The cell fluid in them flows into the gaps between the cells, reducing the number of cells. The expansion causes the leaves to close tightly and the petioles to droop. It will shrink when exposed to external force at night or during the day.

1. Principle

1. Principle

There is a unique organ called the "leaf pillow" at the base of the petiole of Mimosa pudica. There are many parenchyma cells growing in the leaf pillow. These parenchyma cells are extremely sensitive. , it will react to a slight shock or stimulation from the outside world.

2. Physiological response

When the leaves are touched and vibrated, the cell fluid in the parenchyma cells will gradually flow into the gaps between the cells, which greatly reduces the expansion of the cells and reduces the pressure on the parenchyma cells at the end of the pillow, causing the leaves to close. , the phenomenon of petiole drooping.

As Mimosa continues to grow, the leaves will also grow and close. Especially in the silent night, the small leaves of Mimosa will close and the petioles will gradually droop.

It will also close when it is shaken by external forces during the day. When Mimosa pudica receives relatively weak light, the water supporting the leaves in the leaf pillows is acted upon by external forces and flows to both sides, causing the leaves to close. This phenomenon lasts for less than two minutes. The cell fluid returns to the leaf pillow and the leaves gradually return to their original shape.

In addition, the leaves of Mimosa will shrink rapidly before receiving severe vibration, and then suddenly wither. Using this characteristic, we can use Mimosa to predict earthquakes. The editor has finished explaining the shrinkage of mimosa. I wonder if flower friends know anything about it?

2. Physiological reaction

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