Diary of observing plants in the fourth grade of primary school

Through observation, we will find some characteristics of many plants, thus enjoying the pleasure of observation. Look at the diary of observing plants in the fourth grade of primary school with me. Let's take a look together!

Diary of observing plants in the fourth grade of primary school 1

20 1X year x month x day sunny day

Walking in the community tonight, I thought of the homework assigned by the science teacher, and I decided to start from? Science? Observe all kinds of plants in the community.

The plants in our community are typical varieties of Ningbo, mainly including trees, flowers, herbs and fungi.

Qiao Muyou: camphor; Ginkgo biloba, known as the living fossil; A symbol of noble pine trees; A osmanthus tree whose flowers can make tea; There are also humble elms with crooked necks standing on both sides of the main road.

Flowers bloom all year round in the community. They are: azaleas and wisteria that bloom in spring; Gardenia and crape myrtle in summer; In autumn, the low osmanthus trees also come to join in the fun; There are two kinds of camellias: one is open in spring and grows taller; The other is in winter, and it is short, only more than a foot high; There are also Chinese rose flowers, which bloom every month.

Grassland is the least noticeable in the community: large lawns are planted artificially; The others are weeds. They are tenacious and happy. I know plantain and clover, but I don't know some.

There are also special plants in the community? The smallest house in the world? Mushrooms? . Especially after a light rain, you will find many small mushrooms in the grass and under the big tree.

In the community, most plants are green. The leaves of these trees and flowers shine like a layer of wax. Only ginkgo trees are deciduous plants. In autumn, its leaves turn yellow and fall. Weeds are all millet, and they all die in autumn.

Diary of observing plants in the fourth grade of primary school II

20 1X year x month x day sunny day

Last Saturday, my mother took me to a flower shop. When I arrived at the flower shop, there were colorful flowers everywhere, and there were bursts of flowers from time to time. Well done! At this time, my eyes moved to the small mimosa in the corner, which was so small among those tall green plants. Let me have a strange feeling about it. When I left, I asked my mother to buy a little mimosa.

When I get home, I can't wait to see how shy it really is. The leaves of mimosa are green and consist of dozens of tiny leaves, like a woven shuttle, with a stem connecting the leaves in the middle to string the tiny leaves together. Every branch of it has a small thorn, which will bleed if you accidentally touch it. Mimosa really looks like a shy little girl. When I touched its leaves lightly, it closed along the petiole and the leaves became very thin. At the same time, the branches hung their heads, as if afraid of meeting people. How interesting! I'll play with it when I have time.

But once, I went to fiddle with the mimosa, only to find that the leaves of the mimosa moved much slower. I kept fiddling with it, and finally the mimosa stopped moving! Is it dead? This really worries me.

I immediately leafed through "100,000 Why" and finally found the information and understood the mystery: there was a bag of black bean capsules called leaf pillow under the petiole of mimosa, which contained enough water. When you touch the leaf with your hand, the water in the leaf pillow immediately flows to other places. The leaf pillow is flat, so the leaf hangs down. Touch it constantly, and all the water in the pillow will flow out. When fresh water can't be replenished, the blades don't move.

Diary of observing plants in the fourth grade of primary school 3

20 1X year x month x day sunny day

Everyone knows that soybean sprouts are delicious, refreshing and delicious, which makes you full of praise after eating them, so I want to observe the germination of soybeans.

First, we selected 40 full, intact and moth-eaten grains? Robust? Soybean.

Then, we took a small transparent bottle and put these? Robust? Our soybeans are put in a small bottle filled with tap water. The teacher told us that pure water can't be poured, because pure water has no nutrition and soybeans can't germinate.

After 30 minutes, the smooth surface of soybeans began to wrinkle, rising again and again like waves, and like wrinkles on grandpa's forehead.

The next day, the wrinkled surface of soybean became smoother and brighter than before? Robust? Small soybeans are twice as big! The whole class was surprised. When I looked at the bottom of the bottle, the water I just added yesterday disappeared overnight, and the soybeans sucked up all the water! Soybean gives off a faint fragrance, like the fragrance and sweetness of sweet wine, which is very attractive.

On the third day, the germ of soybean bulged, the skin was thinner than before, the bud seemed to break out of the shell, and the sweetness was stronger than before. Students are more and more interested in observing soybean germination!

On the fourth morning, I came to observe soybeans. The students all said that the bud came out, the bud came out, and the tip of the bud was like a tadpole. The fragrance of soybeans also gradually disappeared.

On the fifth day, the stems of soybean sprouts are white.