I have gained knowledge

I have gained knowledge this week. Zhong Yihong brought a pot of mimosa to the class. I found this potted flower to have a special function, so I also went home and called my mom and dad to buy me a pot in the garden. I have to study and study. The stems of mimosa are particularly thin, and the leaves are the same as the petals of chrysanthemums. When I touched the pot of mimosa in the classroom, the leaves of the mimosa were closed. I think the mimosa should have the same function. So I touched it gently with my hand, and it immediately took the stretched leaves like a shy little girl. After a while, Mimosa might think that my naughty egg was gone, so it opened the beautiful leaves generously. This is how it happened? I found out on the Internet that there were many parenchyma cells in its leaf pillow, which were sensitive to external stimuli. Once the leaves are touched, the stimulation is immediately transmitted to the leaf pillow. At this time, the cell fluid begins to flow into the intercellular space and reduces the expansion capacity of the cells. The pressure between the cells in the lower part of the leaf pillow decreases, and the leaf closure and the petiole sag appear. After 1-2 minutes, the cell fluid gradually returned to the leaf pillow, and the leaves returned to their original appearance. It seems that this mimosa is really fun. Later, when I was at home on the weekend, I went to the garden every day to see it. I didn’t expect that when I went to see it one night, it actually had put away the leaves. It was difficult for me to have a hunch that I was coming, but I waited for a long time. Take care of me. I have to figure out what is going on. It was originally impossible to carry out photosynthesis at night, it will also take up the leaves and release toxic substances. In daily life, as long as you carefully observe, you can discover interesting things and gain relevant knowledge.

Fifth grade: Dragon King Bohai