Why does corn have a silk strand? Detailed answer

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Why does corn have a silk strand? Detailed answer

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Why does corn have a silk strand?

The silk strand that the corn plant produces is needed to produce seeds. Here's how it goes. The corn plant has a hard stem 2 to 6 meters tall. A brush appears at the top of it. These are male flowers. Below, one or more shoots are formed - the ovary of future cobs. Each of these formations releases a strand of silky threads. These are female flowers.

Each thread grows from an embryo called an ovule. They are arranged in rows along the future cob. Each of them will produce a seed, which is called a grain, if a silk thread is fertilized with pollen from a male flower. To catch this pollen, delicate silky threads protrude from the leaves wrapping the cob.

When it comes to flowering, the tassels of male flowers produce yellowish fine pollen. A light summer wind shakes the pollen-covered tuft of an ear, and the pollen scatters. The wind carries it around, and it falls on silky threads located lower along the stem. Tiny stigmas at the ends of silky threads catch dust particles. The pollen passes through the silk threads to the ovules and fertilizes them. The ovary grows into a large cob, and the ovules turn into grains.

Growing grains consist of a soft yellow shell filled with a "milky" liquid. When corn ripens, they become hard and contain starch.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Why does coffee taste different?

Coffee has been one of man's favorite beverages for nearly a thousand years. It was first discovered and became widely known in Arabia, but did not appear in Europe until the XNUMXth century. The arrival of coffee in Europe caused a stir. At times it was forbidden, and sometimes used as a medicine. It eventually became a popular coffee drink in England.

When you buy a jar of coffee, you find only coffee in it. But different types of coffee have different flavors. The reason is in the method of preparation, roasting, etc. But the main reason is the type of grain. Coffee growing in different countries is not only of different varieties, but also of the type. For example, usually coffee is grown at an altitude of 450 to 1800 meters. But it is known that the best coffee grows at high altitude - from 900 to 1800 meters.

But this is not the only difference between coffee varieties. Coffee from different plantations in the same part of the country has different characteristics. In the coffee industry, coffee is divided into two main groups. The first group is coffee grown in Brazil and is called "Brazilian". The second group is coffee grown in other countries and is called Milds.

In general, Milds coffee is considered better than Brazilian coffee. But many Brazilian coffees are better than many Milds coffees. Each variety has its own blend of different coffees. Tasting and blending coffee requires great skill. Mastery is required in roasting (not underdone or overroasted) and in grinding coffee. Nature creates coffee - man makes it delicious.

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"When a school of fish swims, each creates a small whirlwind that helps move its neighbor. This is the principle we decided to apply to improve the efficiency of wind farms," says Robert Whittlesey, a graduate student at the California Institute of Technology, who works in the laboratory of Professor John Dabiri, who studies motion. Living creatures.

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