Mimosa observation diary

Mimosa observation diary 1 When eating, my mother mysteriously said to me: Eat quickly. After eating, mom will show you an interesting thing. I quickly finished eating the rice in the bowl and urged my mother to take it out.

My mother took me to the yard, turned on the light in the yard, pointed to a small pot of plants on the ground and said, this is it. I followed my mother's finger and saw a pot of green plants on the ground. The leaves are a bit like locust trees, but smaller and narrower. I don't see anything unusual. Mom said, touch it with your fingers. I squatted down and reached out my finger to touch its leaves. As soon as my finger touched it, its leaves closed immediately, like an automatic switch. I tried to touch other branches and leaves, and they were all like this. I remember, it was a mimosa. I've only read it in books before, but I haven't really seen it. I asked my mother if she was a mimosa. My mother said with a smile, you guessed it, but do you know why the leaves of mimosa close at the touch? I shook my head and my mother asked, do you want to know? I said, of course I want to. Mom added, but mom didn't know. Why don't we read this book together? I immediately ran into the room, found out "100,000 Why", turned to the page of mimosa, and read it carefully. It turns out that there is a kind of cell tissue called leaf mattress in the leaves of mimosa. Its interior is full of water. As long as you shake it, the water in the mat will flow downwards. In this way, if it loses moisture under the leaf mat, it will shrink downward, but it will expand upward because it is full of moisture. So the whole leaf closed and folded. This characteristic of mimosa is formed because its hometown is in Brazil, where there are often storms. Because of this ability, mimosa can survive in storms. Seeing this, I have a new understanding of this small plant.

When you have nothing to do, you can play with mimosa and watch its leaves open and close. Really interesting, nature is really mysterious!

Mimosa observation diary 2 Mimosa finally bloomed, beautiful and lovely, as red as a dancing girl; Like a lamp guiding us in the dark.

It is even more dazzling against the leaves. The yellow spot on it may be nectar, which is very beautiful. It may be a small bullet or yellow light. It is like a fluffy ball of thread, red, as bright and radiant as the sun. The stamens growing on the ball are like the rays of the sun and like a million needles. It is different from other stamens. Other stamens grow in flowers, wrapped like babies, but their stamens are displayed outside, fluttering in the wind, which is amazing!

Just budding, like a hand on a branch, is saluting the flower, which blushes like a shy little girl.

Mimosa observation diary 3 I have a pot of mimosa at home and I like to tease it very much. The leaves of mimosa grow strangely, symmetrically, and get smaller as they go up. Its color is light green, and its leaves are small and thin, giving people a poor feeling. As long as you gently touch its leaves with your hand, it will close the leaves and bend the stem, just like a shy little girl.

I've always wondered why. In a popular science book, this mystery was finally solved by me:

At the base of its petiole, there is an enlarged organ called leaf pillow. There are many parenchyma cells in the leaf pillow, which are very sensitive to external stimuli. Once it touches the leaves, the stimulation will be immediately transmitted to the occipital bone. At this time, the cytosol in parenchyma cells began to flow into the intercellular space, which reduced the expansion ability of cells, reduced the intercellular pressure in the lower occipital region, and the leaves closed and the petiole drooped. 1-2 minutes later, the cell fluid gradually flows back to the leaf pillow, so the leaves return to their original appearance.

The above phenomenon of Mimosa leaves is a physiological phenomenon, and it is also the result of Mimosa adapting to the external environment for a long time in the process of system development. Because mimosa originated in tropical areas, where there are often storms, when the storm blows the leaflets, it immediately closes the leaves to protect them from the storm, thus gradually forming this physiological phenomenon.

I see! It seems that this mimosa is quite clever! A small pot of mimosa hides so many mysteries, and nature is really wonderful! Everyone must observe carefully!

Last summer, someone gave us a pot of mimosa. At first, it was only six or seven centimeters long and had several incomplete leaves. My mother said: as long as you take good care of it, it will live. So I held a glimmer of hope and lifted it.

At noon a few days later, I suddenly wanted to leave. It was time to water and fertilize, so I looked at the big place where the flowerpot was put. Ah, it's alive! At the sight of the mimosa in the pot, I almost jumped with surprise. The ugly mimosa straightened her slender waist and stretched out three green leaves. The green leaves are swaying in the wind, as if a little girl reached out and called me. I couldn't help reaching out to touch it, and it actually folded the leaves shyly. After a while, it quietly unfolded its leaves. It's really interesting. From that day on, I went to see it or watered it every day. I found that mimosa grows a green leaf almost every day, and there are usually two or three small buds between each group of leaves. When the bud grows for a week or two, it actually opens a purple ball, an oval flower with no petals, all thin nuclei, like a fun little fluffy ball. Facing the mimosa and recalling the scene where my mother asked me to plant it in a flowerpot, I fell into deep thinking. At this time, my mother came over and pointed to the mimosa and said to me, Look, the mimosa is small, but it has strong vitality. No matter what the environment, it can constantly strive for self-improvement. People love it. It always keeps its head down and is never proud.

After listening to my mother, I know that I should be a self-reliant, humble and simple person like a mimosa.

Mimosa observation diary for 5 nights, I looked at my mother's mimosa, but I didn't know it. I was shocked at first sight. Mimosa leaves less and less, leaves yellow. It's big before I buy it, and it seems to be dying.

I think it must be that my mother didn't water or fertilize. When I touched its yellow leaves, it stopped shrinking.

I shouted, "Mom, your mimosa is dying." Mom said, "If you die, you die." My name is: "You must have killed it because you didn't water and fertilize it."

Mother said, "Can't we water the house?" I do everything. You are like a landlord. "

I left angrily.

My father planted a pot of mimosa in the flowerpot on the balcony.

Mimosa looks like a small tree from a distance. One of its branches has four leaves, like a chicken claw. Close up, there are many small thorns on the stem. If our hands accidentally touch them, they will bleed. Flowers are pink wool balls for mom to dress up, fruits are like lentils, and there are two or three seeds in pods.

In the morning, the sun came out and the leaves of mimosa stretched out under the sunlight. At night, the leaves of mimosa will fold up by themselves, just like falling asleep.

Observation diary of mimosa 7 It turns out that there is a small plant on the windowsill of our class. Her name is mimosa. There are young leaves on the tiny branches. The leaves are arranged neatly, like two rows of little soldiers. She is very interesting. When we gently touched her with our little finger, its leaves rolled up slowly, like a shy little girl.

Why are mimosa shy? I have never found the answer to this question. Today, when I was reading a book, I finally found the answer to the question. It turns out that at the junction of the petiole of mimosa, there is a bulge called leaf pillow, and there are parenchyma cells in the leaf pillow. When the leaves are exposed to the outside world, the vibration is transmitted to the leaf pillow, and the water in the parenchyma cells immediately flows to the intercellular space, which reduces the expansion ability of the cells. The leaves will automatically close, and the petiole and shoots will droop at the same time. This characteristic of mimosa is also formed. This is also a self-protection ability of mimosa. This special skill is also an adaptation of mimosa to the bad external environment. It turns out that Mimosa's hometown is in Brazil in tropical South America, where there are often storms. With this skill, mimosa will not be attacked by the storm.

I used to think that mimosa is a small plant that won't grow too big. I didn't expect mimosa to grow into a towering tree and produce such beautiful flowers. Now I know that on my way to school, those graceful trees turned out to be grown-up mimosa, and in June and July, she will also produce pink flowers like small fluffy balls. At that time, the whole tree will be covered with a layer of pink, just like patches of pink sunrise and clouds of pink mist. Really beautiful!

I can't help telling you here that mimosa is another magical skill. According to scientists' research, mimosa can also predict earthquakes! Under normal circumstances, mimosa leaves open during the day and close at night. If the leaves of mimosa are closed during the day and open at night, it is a precursor to an earthquake.

Mimosa is lovely when it is young, elegant when it grows up, beautiful when it blooms, brave when it resists storms, and has the special function of predicting earthquakes! It really makes people dare not underestimate!

Mimosa observation diary 8 Last Monday, the teacher asked us to observe a plant in the experimental class.

Today is Saturday. Come together in the morning, put on your clothes and observe the mimosa planted in our family. Its leaves are beautiful, long and green, very beautiful! I found the mimosa. If you don't touch it, it will not be shy. If you touch it, it will be shy, shrink its body and close its leaves.

After lunch, I went to observe mimosa again, and found that mimosa seemed to be sleeping, with drooping leaves and shrinking when touched. After a while, I found it unhappy, as if to say, why did you wake me up? Can't you see I'm taking a nap? You ruined my dream. It's really annoying

How's it going? Isn't my mimosa interesting?

My father took me to the park on Saturday. There are so many flowers and trees in the park! There are beautiful butterflies flying and countless flowers blooming. Those flowers that compete for beauty and beauty seem to say, "Little Butterfly, I invite you as a guest." The butterfly nodded and said, "Good!" Inadvertently, I found an unknown grass among the flowers. I tried to touch it, and it closed its leaves. I felt very strange and ran to ask my father, "Dad, what grass is that?" As soon as I touched it, it closed its leaves? "

Dad observed it carefully and told me, "The grass you see is a mimosa." I asked, "Then why does it close its leaves?" Dad teased me and said, "How shy!" I said, "How shy! How strange!" Dad smiled and said, "Haha, you believe this. Let me tell you something. Because if you touch it, the water in the leaves will flow into the stem, and if you touch it again, the stem will bend down. Go back and have a good look at your encyclopedia! " I said shyly, "I see, but you lied to me just now." I want to hit you three times. " "Good, good, good." Dad said, I took the opportunity to hit my father three times.

At noon, my father said, "Let's go home, or my mother will be in a hurry." Neither my father nor I want to go home. On the way, I thought: mimosa is really interesting. Do you like it? If you have the opportunity to understand, I hope more children will understand. If you see it, don't forget to touch it!

Mimosa observation diary 10 165438+ sunny day1Saturday, October 3rd.

A mimosa was planted in the community. Relatively short, only about 50 cm high. Although its stem is not as thick as chopsticks, it is straight and has many small thorns. There are six or seven branches on the stem, and there are many neatly arranged leaves on both sides.

Mimosa is very interesting. If something touches them, they will close the leaves shyly, and the petiole will droop for a while, then slowly open. They really look like a shy little girl. It will also blossom and bear fruit. Its flowers are small white fluffy balls, and its fruit hangs on the tree like a bunch of bananas.

I like this mimosa very much. I go to see it from time to time and play with them.