Expository essay for 5th grade apple, 5th grade expository essay on apple 400 words

Apple Expository Text.

The apple is a familiar fruit, it's chubby, and it has a bountiful red color all over its body. Holding it in your hand it will gently cling to your palm, and when you choose it from thousands of apple trees, it is a kind of happiness for it It can bring people a sweet taste, and this is its greatest happiness, apple, which is a fruit that grows in the north. Idioms"Fruitful"That's what it is.

As you walk through an apple grove, the enticing smell of the apple forest will enter your nostrils and even your whole body with a breeze, and the long-lost feeling of comfort will burst out of your long-buried nerves. What could be easier than that? Let me introduce you to Apple!

Flowering apple trees are deciduous trees that can reach a height of up to 15 meters, and are generally 3 to 5 meters tall under cultivated conditions. The trunk is grayish-brown, the old bark has irregular longitudinal lobes or flaky peeling, and the twigs are smooth. The leaf order is single-leafed alternate, elliptical to ovate, with serrated margins.

Umbel inflorescence, petals white, pink when bracting, stamens 20, columella 5. The fruit is a kernel and varies in color and size depending on the variety.

Apples love light and prefer slightly acidic to neutral soils. It is most suitable for sandy soils with deep soils, rich in organic matter, and well-ventilated and drained core soils. There are more than 7,500 known varieties.

Good breeds: "Red Star Series", "Red Fuji", "Jonathan" and so on. In addition to fresh varieties, there are also cooked apples.

Because the fruit acid of apples has the effect of retaining moisture, it is suitable for baking. Apples contain a lot of pectin, a soluble fiber that lowers cholesterol and bad cholesterol. It can also control conditions such as asthma and chronic obstructive pneumonia.

Apples have a special role in enhancing children's memory. Apples not only contain a variety of vitamins, lipids, minerals, sugars and other nutrients necessary for the brain, but also contain fine fiber, which is beneficial for children's growth and development, and zinc, which can enhance children's memory.

Zinc is an essential element for the formation of nucleic acids and proteins that are closely related to memory, and zinc deficiency can lead to poor development of the hippocampus at the edge of the cerebral cortex. Once zinc in food is reduced, a child's memory and learning ability can be severely impaired, and this damage can last into adulthood. In order for a child's memory to be good, children should be asked to eat more apples.

Introduction to Apples Apples, also known as Tao Po, are kernel fruits, which are made up of firm, juicy flesh and have a pit with a few seeds, and belong to the same genus as pears. Native to West Asia or Eastern Europe, there are about 7,500 varieties of commercial apples worldwide, which are sweet and sour, delicious and nutritious, and are one of the fruits suitable for all ages.

Nutritional value Fresh apples have a water content of 85%.

Apples are rich in carbohydrates, vitamins and trace elements. It is higher in vitamin A and carotene. Effects on disease and health.

It is rich in pectin, a water-soluble dietary fiber. Pectin has the effect of protecting the intestinal wall, activating useful bacteria in the intestines, adjusting gastrointestinal function, absorbing water, eliminating constipation, stabilizing blood sugar, beautifying the skin, adsorbing bile and cholesterol, and can effectively prevent hyperlipidemia, hypertension, hyperglycemia, clean the intestines, and prevent colorectal cancer.

Malic acid and citric acid in the sour taste of apples can increase the secretion of gastric juice and promote digestion.

Malic acid can also stabilize blood sugar and prevent diabetes, so diabetics should eat sour apples.

Apples are rich in potassium, which can prevent high blood pressure. Because the salt intake in the diet of Chinese is seriously excessive, it leads to sodium and water retention in the body and promotes hypertension. Potassium lowers blood pressure by increasing the amount of sodium that promotes high blood pressure from the kidneys, reducing the amount of sodium in cells.

Potassium also dilates blood vessels, and works with pectin to prevent metabolic syndrome.

Apples also protect against cancer and prevent lead poisoning.

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When it comes to Apple, everyone must be familiar with it. People say one apple a day, and doctors are so angry that they run all over the streets.

In fact, eating an apple a day is not so good, but it can get sick less, and there are still some diseases. Apples are highly nutritious and contain a variety of vitamins. Apples contain 15 carbohydrates and pectin, vitamins A, C, E, potassium and antioxidants.

The natural chemical antioxidants of polyphenols and flavonoids contained in apples can remove metabolic "garbage" from the body in time and reduce the content of neutral fat in the blood, which is the main culprit of arteriosclerosis and is particularly important for the prevention of cardiovascular and cerebrovascular diseases. Dutch medical scientists studied that 805 male subjects aged 65 to 84 years ate 1 2 apples a day, and the risk of heart disease was halved. American scientists have pointed out that a medium-sized unpeeled apple can provide grams of cellulose, and the soluble fiber in apples ——— pectin, which can effectively lower cholesterol.

Experiments have shown that people who eat two apples a day can lower their cholesterol by 16. A study published by researchers in Finland shows that eating apples can reduce the risk of lung cancer. They point out that the flavonoids contained in apples are important antioxidants produced through metabolism and are the main reason for reducing the incidence of lung cancer.

Now that you know the benefits of apples, I advise you to eat 1 or 2 apples a day. Then you are a healthy person.

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