Silkworm life composition 400 words

In normal study, work or life, everyone will come into contact with composition to some extent. Composition is a verbal activity in which people express their feelings in written form. Do you know how to write a standardized composition? The following is my carefully arranged 400-word silkworm life composition, hoping to help everyone.

Silkworm baby life composition 400 words 1 My family keeps silkworm babies every year, so you can observe them. Silkworm baby is very cute. Old, long and white, with two rows of black spots. It has 16 feet, followed by 10 feet and 6 feet in front. It also has a small, pointed tail.

The life span of silkworms is actually very short. At first, the young silkworm swayed back and forth on the edge of mulberry leaves, chewing the flesh and blood of mulberry leaves, chewing the meridians of green leaves and sucking the nectar of mulberry leaves. Day after day passed, the silkworm baby grew up day by day, and its body became bigger and more transparent. It spun silk at once.

Why do silkworm babies cocoon? I asked dad. Dad said: "There are three ways. One is to ask the teacher at school, the other is to observe by yourself, and the third is to use the computer and mobile phone Baidu." I go to the silkworm room to see the silkworm babies every day. One day, I was very surprised. My grandparents are installing grids for silkworm babies. Why? Grandma said, "Silkworm babies are going to make cocoons. Without a power grid and a home of your own, how can you cocoon? " Silkworm babies spin silk day and night, spitting out the longest silk in the world, and the cocoon is getting thicker and thicker. A few days later, I picked up the cocoon and shook it, making a noise, which was very interesting. Take off the cocoon, put it in my little box, and observe it day by day. One day, the silkworm broke into a butterfly. A few days later, there were many black seeds in the box. It turns out that silkworm babies are breeding offspring! The life of silkworm ends here, and a life cycle begins again. ...

Silkworm babies' short life is so lovely and interesting, leaving behind a 5,000-year-old silk culture in China, which reminds me of a poem by Li Shangyin: Spring silkworms weave until they die, and candles drain the wick every night.

Silkworm life composition 400 words 2 Hello everyone! I am a silkworm baby. I climbed out of a little white thing like a grain of rice. When I first came out, I rubbed my eyes and looked-hey, what's that?

It's green, as thin as paper, with many serrations on it. I looked at the smallest one-"Oh, it hurts me!" "After I was shocked, I gently asked the biggest piece:" You. . . . What are you? " The thing said, "We are mulberry leaves, specially fattening you for nothing." I looked at me and said, "I am black and small, how can I become white and fat?" "Just then, my sister called me:" Sister, go to see a good thing with my sister! " "I'll follow, my sister found a place where no one sleeps. I was bored, so I slipped away to eat mulberry leaves. I suddenly felt dizzy and then fell asleep. I slept for about three days. No, two days. That doesn't seem right. Let me think again. Yes, one day. I opened my eyes and saw, hey, where am I? My companion said to me, "You finally woke up." One of my companions said, "This is the silkworm house." Another companion said, "You and your two sisters and one brother were in a coma this morning, but now they are awake. Hey, how did you grow up? "

I looked up, hey, I turned yellow, it should be my sister's molting. I lost my hair about four times and my stomach lit up. I think I should spin silk to make cocoons. Then I will try to spit and finally spin silk. In a few days, I can be a moth, I thought happily. I changed from silkworm to pupa, and from pupa to moth. I slept in it for several days and yawned-I got up with a yawn. I'll come down and have a look first. Hey, why haven't the other two come out yet? Forget it. Wait here. They finally came out. I laid eggs. That's it. I ended my life.

Silkworm babies are common insects in our lives. It is white, fat and attractive.

Silkworm life is divided into four stages, namely, egg-larva-pupa-adult. When the silkworm baby was just an egg, it was only1.2-1.3mm long. Newborn silkworm eggs are egg-yellow, which looks like a flat oval with a magnifying glass. If left at room temperature, it will gradually turn purple-black. About 400 silkworm eggs can be tiled on a dollar coin.

After a period of feeding, the silkworm baby will crawl out of the egg and climb up like an ant. We call it ant silkworm. Silkworm babies need to molt five times to become pupae after becoming ants. What is the change of its molting five times? Black baby silkworms go through the first molting, turning yellow and thin; Became white and tender when molting for the second time; It ate mulberry leaves for a few days and lay in bed. When it wakes up, it gradually gains weight. After molting for the fourth time, the young silkworm becomes white and bright. After molting for the last time, the young silkworm became a moth girl. During the four molting stages, silkworms mainly eat mulberry leaves. Moreover, it has an amazing appetite and can eat mulberry leaves day and night. Those mulberry leaves must be washed fresh mulberry leaves.

"Silkworms will weave until they die in spring, and candles will drain the wick every night." Silkworm babies will complete their final mission-cocoon formation after molting for five times. Silkworms spit silk out of their mouths and curl up in cocoons. After two days, they will produce a cocoon. After the silkworm baby becomes a moth girl, she lays eggs and dies. Its cocoon is dedicated to people and woven into exquisite silk.

I am very moved by the selfless dedication of Silkworm Baby.

Today, I got some silkworm babies at school and put them in a box. At this time, they are three-year-old silkworms, but unfortunately I didn't see the newborn silkworm baby. From the transparent box, there are some small black "bugs" in it. Are they still alive?

Two days later, I put the washed mulberry leaves in the box, and those "bugs" scrambled to open their mouths and bite. It turns out that they are all alive and well. After a while, only a small piece of mulberry leaves was left. Now they are a little bigger than ants.

As young silkworms grow up, the color of their bodies turns white. Now they are all white and fat. They sleep except eating. Although it looks lazy, it is actually to store energy and prepare to spin silk. Now they are two centimeters long, and I find their excrement is black.

A month later, I saw a cocoon in a corner of the box. First, it spits out thin white lines and wraps itself layer by layer, and gradually forms an oval shape. From the outside, I can see silkworms crawling around and spinning silk.

How time flies! Another month passed. My cocoon is moving, and it will break out. Suddenly, the cocoon broke a hole and a silkworm moth slowly poked its head out. Unexpectedly, it looks no different outside, but wings grow inside. It slowly spread its wings and climbed out.

The silk quilts we usually use are all bought by these little creatures. Are silkworms great?

Silkworm's Life Composition 400 words 5 Silkworm is the embodiment of purity and beauty, and it is angels in white. It made a great contribution to mankind, but later it was a moth that put out the fire and brought about its own destruction.

In early spring, my uncle gave me four or five little things as big as sesame seeds, which made me very happy. I found a small box with some tender mulberry leaves in it. After a few days, the little thing as big as sesame began to wriggle, slowly gnawing at the small leaves with its small mouth. Seeing that these young people are flexible, I really feel proud of the spring breeze and full of vigor, and my heart is sweeter than drinking honey. According to adults, silkworms at this time are called "ant silkworms".

After a long time, the silkworm shed its skin several times and became a beautiful "mature silkworm". "Cooked silkworm" is three or four centimeters long and has become translucent. Their food intake has also greatly increased. The first thing I do when I come home from school every day is to pick up mulberry leaves, and I never delay. One day, I saw that the silkworm baby didn't eat or drink, and people said that they would go up the mountain. I tied the grass into a mountain, and they climbed up the mountain, squatted on it, and began to spin silk, and the white silk in their mouths kept flowing. These silks are wrapped around the silkworm's body in a small oval house. They are still spinning silk and making cocoons. At first, I saw its weak body crawling up and down in the cocoon, and the cocoon silk was entangled. However, after a while, the silkworm body disappeared into the cocoon. A pink "peanut shell" appeared in front of my eyes, and it was bulging. My mother told me that beautiful colorful silk is made of this kind of silk.

I am a little sad to see the silkworm baby become like this, and tears are spinning in my eyes. "Spring silkworms will weave until they die" is a true portrayal of spring silkworms.

I raise silkworms every year, because raising silkworms is my interest.

Silkworms hatch from eggs. At that time, it was very small, black, thin and long, almost like a small ant, like a black sesame. It also has a small appetite. A piece of mulberry leaf half the size of a palm can feed more than 20 silkworms for several days. Unfortunately, it's summer and the temperature is very high. Mulberry leaves become hard and stale in less than a day, so silkworms can only eat fresh mulberry leaves.

After about twenty days, the silkworm gradually grew up, but it was not big enough. It is about a centimeter long and a quarter centimeter wide. Its body turns gray, but it doesn't eat much. Ten silkworms can eat a mulberry leaf a day.

Twenty days later, the silkworm has grown to three centimeters long and its body has become thicker and whiter. So cute! They eat mulberry leaves faster, too. A silkworm can eat a piece of mulberry leaves in one day.

Ten days later, the silkworm has grown to the length and thickness of the little finger, and its appetite is even greater. Even the stems on mulberry leaves can be eaten. Now they should be fed mulberry leaves in the morning, noon and evening.

A few days later, the silkworms stopped eating mulberry leaves and their bodies glowed one by one. They must be full of silk. They began to look for suitable places to spin silk and make cocoons.

A few days later, their cocoons were all ready, some were yellow, some were white, and some were even pink. They are sleeping in the cocoon!

Two weeks later, they took off their "red robes", broke out of their cocoons and became silkworm moths. Female moths must mate with male moths before they can lay eggs. Mother's belly is very big, as if there are "full" eggs. The man is thin and small, and there should be nothing in his stomach.

In less than twenty days, the life of silkworm moth will be over.

Silkworm's life is short, but its spirit of silent dedication is worth learning.

A Silkworm's Life Composition 400 words 7 In a play, I caught several young silkworms, raised them and began to observe.

After a meal, the eggs are flat, small and dark. After a while, I saw a black hole in the small black egg, and a head was slowly crawling out. I looked at it with a magnifying glass, and it had little fluff on it. I am ecstatic. On the fourth day, it became dark. I asked my dad, and my dad said, this is called "ant silkworm".

After a few days, the little silkworm can't eat. I asked my father, what happened? Dad said it was going to shed its skin. Sure enough, the next afternoon, it turned from black to yellow, but the silkworm shed its skin only four times in its life. I'm really afraid it will die if it doesn't eat mulberry leaves.

Silkworms shed their skin again, this time from yellow to white, and their bodies became smaller.

The silkworm shed its skin for the last time, but it was still white, but slowly began to gain weight and eat more and more. After a few days, the silkworm went to the "mountain" to spin silk. Its silk is white, much thinner than hair, and elastic.

A few days later, silkworms began to cocoon. I'm surprised. Three days later, the silkworm moth flew out of the cocoon and began to lay eggs, but died after giving birth.

Through observation, I found that silkworm's life has gone through four stages: egg, larva, pupa and adult.

Silkworm's life composition 400 words 8 Silkworm is the embodiment of purity and beauty and has made great contributions to mankind.

A few days ago, the school reporter was very happy to receive a notice to adopt a silkworm baby. On the day of adoption, many young journalists adopted more than one box.

I'm excited to see small creatures squirming. A few days later, when the young silkworms grew up, I began to observe their actions carefully. Silkworms can get up slowly and look a bit like sea cucumbers. Stretching and shrinking are interesting. A few days later, many silkworms couldn't eat or move, as if they were dead. I am in a hurry. I get up in the morning to see them, and I have to watch them several times at noon and evening. Later I found that they were molting. It's a pity that I missed this opportunity to watch the young silkworm shed its skin.

As the days passed, the silkworm grew up day by day. This time I finally saw the silkworm shed its skin. In the evening, the silkworm sleeping in the small box next to my pillow began to shed its skin again. They contract their bodies first, then straighten their tails. Ah! A pair of golden feet first emerged from under the stomach. After a while, it bit the skin with its mouth, its tail shrank, and its skin dropped a little ... Somehow, after molting, the silkworm stopped eating and drinking. Dad said that silkworms were going to cocoon, and I was extremely happy. But after a few days, the silkworm became thinner and thinner and began to curl up. A few days later, all the silkworms died. I'm very sad. I asked my father what happened. My father said that the silkworm leaves were in the refrigerator, which was too cold. Silkworms have loose bowels after eating them. I am really ashamed, because of my carelessness, more than a dozen young silkworms died.

Silkworm, it only needs a few mulberry leaves, but what it contributes to people is exquisite silk. This reminds me of a poem: "Silkworms in spring will weave until they die ..."

How noble the quality of silkworms is!

The life of a silkworm baby consists of 400 words. This year, my family raised ten lovely silkworm babies. Those little silkworm babies "moved home" in April, which was given to me by a colleague of my grandfather's unit.

The silkworm babies who just came to my house are all small and dark, and they get up slowly. The "new home" I prepared for them is a small wooden box. As soon as they arrived, I quickly put the mulberry leaves my mother picked from the mulberry trees in their school into a small wooden box. I want to laugh when I see them eating happily, because when they eat mulberry leaves, their heads will swing back and forth, which is very funny. About ten days later, when I was putting mulberry leaves, I saw some black skins in the corner of the box. I also found that several silkworm babies were obviously older, which made me very happy. After many days, after molting several times, the silkworm baby gradually turned white, became fat, became thicker and bigger, and became somewhat transparent. Another day, I saw a little silkworm as if it was about to start cocoon formation. Its fat body began to wriggle in the corner near the box. After a while, it began to spin silk and cocoon. Lay a thin foundation first, then spin silk bit by bit, wrap yourself up layer by layer, and finally form a white cocoon. Several other baby silkworms also began to cocoon.

A few days later, several moths emerged from their cocoons. The most naughty moth always wants to fly out of the wooden box. Silkworm life is like this. Do you think they are hard?

I am very happy today, because there is a small box at home, which contains lovely silkworm eggs, black and as big as sesame. I want to observe their changes carefully. Black silkworm eggs are young ants, which is very interesting. My mother said that young ants have to molt four times before they can successfully cocoon!

A week passed and the silkworm eggs were all empty, so I cut the mulberry leaves picked from the box with small scissors. They seem to know that delicious food is coming, and they look more energetic!

After two weeks, I found that the number of silkworms has increased and there have been great changes. Their bodies become white and tender, and their eyes are like small black spots. They have wrinkled skin on their heads and a small black spot on their bodies. There are small black dots in every link. Silkworm babies have fourteen feet, six on their heads and eight on their bodies. I took them out of the small box and prepared them.

A few weeks later, they began to cocoon, and balls made of silk hung on the top of the nest, like small sandbags, and some of them kept shaking. The little fat silkworm next to him is still struggling to tie it. It shook its head slowly and kept wrapping itself in silk, as if it were carefully knitting gorgeous clothes for itself.

Silkworms in spring will weave until they die, and candles will drain the wick every night. Silkworms eat mulberry leaves and spin silk, which has made selfless contributions to mankind. I'm still wondering if it will turn into a silkworm moth and fly out next. The scene must be spectacular and fly into the sky like a dancer. Maybe this is the whole life of silkworm!

Li Shangyin, a poet in the Tang Dynasty, said: "Spring silkworms are weaving until they die, and candles will drain the wick every night." I have raised silkworm, I know their life and their selflessness.

At first, silkworm eggs the size of small sesame seeds developed and gradually became small silkworm babies. They wriggled and began to look for and eat mulberry leaves. That rustling sound is beautiful.

It is said that the female has changed eighteen times, and the silkworm baby will change eighteen times. She became fatter and fatter from the beginning. After molting several times, she finally grew into a mature silkworm. Look at their white fat bodies, how lovely! When one day they don't eat or drink and crawl around the cardboard box where I keep them, I think they are going to start to cocoon. As I expected, a few days later, white cocoons appeared around the box. Silkworms eat mulberry leaves, but spit out silk that can be woven into silk. How wonderful! In addition, if you have seen the silk they spit out, which is thinner than hair, but can produce such a big cocoon, you can imagine what a huge project it is!

Here, do you think the silkworm's life is over? No, not yet! Before long, these silkworms will break out of their cocoons, grow six feet, long tentacles and wings on their fat bodies and become silkworm moths again. Look at those cocoons. They all have holes, like deflated balls. Male moths and female moths begin to mix and lay eggs, and these eggs will hatch into young silkworms in the next year.

Look, the life of silkworms has changed a lot, and nature is really wonderful. If you observe carefully and use your head to think, you will make more new discoveries!

Silkworm's life composition 400 words 12 People often say: "The silkworm in spring will weave until it dies." Yes, the silkworm's life is great. Do you know what life is like for silkworms? Please listen to me tell you in detail.

Spring came, and I found that the eggs that our silkworm baby put in the box began to hatch. Some small silkworms only about a millimeter were born. They are black and crawling in the box. I scattered mulberry leaves into the box, and after a while, the silkworm gradually grew to about one centimeter. At this time, their food intake increased and they kept eating mulberry leaves all day. A few weeks later, the little silkworm grew into a big silkworm three or four centimeters long, with a part of its body', and all the mulberry leaves were eaten where the body crawled, only to hear the rustling sound in the box, and their excrement _ _ silkworm excrement became very big. Silkworm is an adult now.

A week later, they began to cocoon. At this time, the silkworm stopped eating mulberry leaves, crawled around the box, found a suitable position, and then surrounded itself layer by layer, gradually forming a film, and finally produced a cocoon after a day of hard work. Cocoons are white, yellow and light pink in color. A few days later, the silkworm moth emerged from the cocoon, and the moth was under the wall of the box. The seed is a little smaller than the grain of rice, brown at first, and gray after a few days. Silkworm eggs stayed in the box for a winter, turned white in spring and began to hatch young silkworms.

Isn't the life of silkworm interesting? It contributed silk to mankind, but lost its life. How can you not say that silkworm's life is great?

A Silkworm's Life Composition 400 words 13 There are four silkworms in our family, all of which were given to me by the teacher in an art class in a good mood. On the first day after I came home, I made a careful observation. I found that the silkworm is black, with fine hairs on it, only the size of an ant, and looks particularly weak. I thought I would take good care of them. I brushed them on the washed mulberry leaves with a brush, and they kept biting the mulberry leaves as if they hadn't eaten for days.

The weather will be fine on Tuesday, May 5th.

Today, I saw that the color of silkworm slowly turned golden yellow, crawling around on mulberry leaves, and it seemed that it ran faster than anyone else and slower than anyone else! I want to tell one of them: "You are out of bounds"! But I can't speak the language of silkworms, and they don't know what I'm talking about. I can only watch the game, give them points and give them prizes. After the game, I gave each of them a big mulberry leaf, and they were all satisfied.

It will be sunny on Wednesday, May 27th.

They became white and big, and I thought: I should eat the big mulberry leaves I gave them awards and make them grow so big! I was so happy that I gave each of them a piece of mulberry leaf. After a while, I found that the biggest one vomited some silk in the box. I was very surprised. It was like coming to paradise on earth.

It will be sunny on Friday, May 29th.

My silkworm has wrapped itself, and only one silk can wrap it all. I looked at those white circles and thought: If only one powder, one green, one yellow and one white, I was still immersed in that wonderful dream … However, "the ideal is always so beautiful, but the reality is always so cruel"! All white!

One day, in science class, the teacher told us about the life of silkworms. I was very interested in silkworms, so I asked the science teacher for a piece of silkworm paper. I want to raise silkworms myself and observe its life.

Silkworm eggs are yellow, smaller than small grains of rice, and laid flat on paper. My father is responsible for picking mulberry leaves for me and spreading them around the box. After two days, the silkworm eggs hatch, and the baby silkworm is like a black fluffy bug. I am very happy because a new life has begun. After it came out of the shell, it crawled in the direction of mulberry leaves and began to eat mulberry leaves. Two or three tablets a day is enough. Later, it gradually increased, and the silkworm baby grew up slowly, and the color became thicker and lighter. When he grows to four or five centimeters, he is white and fat, with six or seven stripes on his body. On the second bar, there are two small points that will grow wings in the future. In the penultimate section, there is a small thorn, its tail extends downward, and there are many small Mao Mao around it.

After more than ten days, the silkworm began to find a place to spin silk. It spins silk to fix itself first, then spins silk around itself, and its tail keeps swinging inside, which is very regular. Where the tail is placed, the silk is pulled, and you can see the outside at first. Later, as the silk became thicker and thicker, it could not be seen outside, and finally an oval cocoon was formed. After a while, if you cut the cocoon with scissors, there will be a live pupa inside. This is a live pupa bought in the market. People buy cocoons from factories, spin, process and weave them into silk. This is a dead pupa bought in the market. )

Life Composition of Silkworm Baby 400 words 15 Today, I adopted 50 black and lovely silkworm babies from my teacher. I'm glad to bring them back to my home.

They were put into a big shoe box by me, and I told them softly, "Little silkworm baby, this is your new home." They nodded happily and understood my words.

Silkworm babies are dressed in black, and the newly hatched silkworm babies are about as big as ants. I have two round white spots on my head My mother told me, "these are the eyes of silkworm babies."

One-year-old silkworms like to eat small and tender mulberry leaves. Every morning at first light, I get up first and feed young silkworms with fresh mulberry leaves. They scrambled to climb over and eat them, making clicks. It's interesting for silkworm babies to eat mulberry leaves. They eat here and there, and the mulberry leaves they eat become grotesque, and they smile happily after eating.

Four days later, the silkworm baby began to shed its skin. Seeing it tighten its body first and then straighten its tail, they kept doing such strange gymnastics slowly and continuously. Ah! The body turned into a golden second-instar silkworm. Peeling increases by one year at a time, and the body grows a lot. Silkworm babies sometimes don't move. They may be too tired. They are resting! Then, they bit their skin with their mouths, their tails shrank, and their skin dropped a little ... They finally completed a thoroughly remoulding action, took off their old golden clothes, shed their skin four times, and then became a white and fat five-year-old silkworm, which took about 20 days. Seven days later, the fifth instar silkworm began to spin silk and form a web. Three days later, it molts again in the net, and then becomes a silkworm chrysalis. After 10, it becomes a silkworm moth. This is the life of a silkworm baby.