How do seeds come about? Detailed answer

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How do seeds come about? Detailed answer

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How do seeds come about?

We all love to smell and look at gorgeous flowers. And it is very difficult to accept the idea that the sole function of a flower is to produce seeds. The petals of the flower contain the organs necessary for the production of seeds. In the very center of the flower is one or more pistils. Stamens are located around the pistils. The pistil is the female part of the flower. It is enlarged downwards. If we cut the pistil in this place, we will find tiny white embryos there. They can develop into seeds if pollination occurs. Pollen is produced in the male organs of the flower - the stamens. At the end of each stamen there are small sacs that contain pollen.

In order to form a seed, the pollen from the stamens must reach the ovule, hidden at the base of the pistil. The only way it can get there is through the tip of the pestle, which is called the stigma. Pollen falls on the stigma, sticks and germinates there. A tube runs along the entire pistil, ending in the ovule. This pistil tube is filled with pollen, which reaches the ovule, fertilizes it, and the fruit, the seed, begins to develop. Only plants of the same species are pollinated.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

How did spam exist when there were no computers?

The word SPAM appeared in 1936 - under this brand, an American company produced spicy canned meat ("SPiced hAM"). To sell their stocks of not the first freshness after the Second World War, a massive advertising campaign was carried out, which became the standard of importunity after the sketch of the Monty Python troupe. In 1986, a number of identical messages appeared on Usenet conferences from a certain Dave Rhodes, who advertised a new pyramid scheme. Someone drew an analogy between such a mailing list and canned food, and since then the word spam has taken on a new meaning.

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Seal in touch 13.12.2002

Unlike the hero of the "Telephone" Chukovsky, the staff of the University of St. Andrew (Scotland) are happy when another seal calls them. They glue miniature radio beacons provided by the German company Siemens to the fur of newborn seals.

The device, which works through the cellular telephony network, from time to time sends messages about the activity of the seal to the university computer. If there are no messages for several days, the animal is considered dead.

Of the approximately 38 gray seals born every November in colonies of these mammals on the coast of Britain, only half survive to their first birthday, but there is no exact data yet. In the future, scientists intend to add a depth gauge and a positioning device to a simple motion sensor in radio beacons in order to accurately record migration routes and the depth at which animals hunt.

The device stays on the skin of a seal for no more than a year and disappears during the next molt.

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