Why do mimosas close up? Is it really because they are shy?

1. Is it because of shyness?

Mimosa will close when touched, but it is not really shy. It is just a figurative expression. It does not stay closed for very long, and after about 5-10 minutes of stimulation, it will gradually return to its original shape. However, if it is touched continuously, it will no longer show signs of closing. Because it is always stimulated, the cell fluid in the pulvinus will be lost, but it cannot be replenished immediately.

2. Reasons for Closing

1. The bottom of the petiole of Mimosa pudica has an organ called "pulvinus", which contains many thin-walled cells. Because the cells contained in it are very sensitive, they will react when they are exposed to some external stimuli, which is the closing phenomenon we see.

2. When the leaves of the plant are touched by something or vibrate slightly, the cell fluid contained in those cells will flow to other places. This will reduce the expansion of the cells, and the cell pressure in the pulvinus will become smaller, resulting in the phenomenon of closing and tightening.