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The composition of pretending to be dead is about 450 words.
Why are mimosa shy? With this question, I looked it up on the Internet and found that the petiole and leaf base of mimosa have an enlarged part called leaf pillow. Leaf pillow is the core reason why mimosa is shy. There are vascular bundles in the middle of occipital bone, surrounded by parenchyma. When the occipital, which is the most sensitive to stimulation, is touched, it will lead to the discharge of cell fluid of parenchyma cells in the upper part of the occipital, resulting in the imbalance of expansion pressure between the upper and lower parts, leading to the closure and drooping of leaves.

In fact, after reading these, I still don't understand why it should be shy.

One day at dinner, I asked my father this question. Father thought for a moment and said, "There is a kind of mouse in Africa. When in danger, it lay motionless on the ground, with its mouth slightly open and its eyes closed. At the same time, it stinks. " Do you know what it is doing? ""Does it play dead? "I whispered with a smile." Yes, it's playing dead, but it's also the best way for them to protect themselves, because no carnivore wants to eat dead and smelly animal carcasses. Why are mimosa "shy"? Perhaps to avoid the harm of herbivores and the natural environment, protect yourself in an exhausted way! "After listening to my father's explanation, I was suddenly enlightened and finally understood why mimosa was shy.

Component 2:

There is a mimosa in our family. It's shy. A gust of wind blows, or if you touch it with your hand, it will close the leaves.

Once the paper said that a family had a mimosa, and mimosa thought it was the most beautiful. The owner was very proud to see it, so he put it in front of the most beautiful potted flower in spring, summer, autumn and winter. It found that it was not the most beautiful and was very shy. So whenever a gust of wind blows or a person accidentally touches it, he will close the leaves shyly. Because it is shy, I gave my family a nickname "shy ghost", which suits it very well! Why are mimosa shy?

But I looked it up online, and it's not like this. It is said on the Internet that drooping leaves and petioles with poor grass are not shy, but a reaction after plants love to stimulate and vibrate. This reaction is biologically called touch movement. It is the result of the change of cell tension of mimosa after external stimulation. After online consultation, I know more, not only these, but also other knowledge! The flowers of mimosa are not flowers, but many small flowers. If you carefully separate each small unit on the ball, you can see that each small unit has four petals, four long stamens and a pistil. It turns out that that small unit is its real flower! It seems that we should read more books about plants and learn more! Why are mimosa shy?

By the way, raising mimosa can't be put together with colored peppers, or mimosa will die! Because there may be a red spider on the colored pepper, our mimosa died because of the red spider! Why are mimosa shy?

Now, I know more detailed information about mimosa online. It seems that the internet has also helped us a lot! Read more books in the future, ask questions you don't know, and learn more about plants! Why are mimosa shy?

Wonderful comments: Yang Yang's exercise this week is to write a scientific paper based on life and observation. Gao Ming saw this requirement and found it a bit difficult to write a paper. Yang Yang made a mistake himself, and I don't know how to write it. At first, I wanted to write about parrots at home, but after observing for a while, I found it difficult to write. I also want to write about the current environmental protection theme, but I didn't expect much content. Later, I saw the poor grass on the balcony and thought of its shyness. On the whole, this article is not bad. By looking up some information on the internet, I have increased my knowledge. I also realized that I didn't read much. It seems that Yang Yang will take action next. This makes the brilliant heart feel comforted, baby, come on! I couldn't find the photo of mimosa I took before, so I searched it online. Please enjoy ~ ~