Pollination by wind.

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Pollination by wind, when weightless pollen is transported with air currents, is very common in nature. Many trees are pollinated, such as oak, ash and pine, as well as corn and cereals.

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Wind-pollinated plants are forced to produce a large amount of pollen to increase the chances of reaching the stigma of the corresponding plant. Pollen must be very light to "float" in the air.

If you shake a catkins of ripe hazelnut, a flowering coniferous branch or a timothy meadow, you will see an entire cloud of pollen in the air. Some plants have small air bubbles that help pollen last longer in the wind.

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Wind-pollinated plants often grow in large groups, for example, hazelnut bushes, birch forests. Man sows rye and corn in hundreds, and sometimes thousands of hectares of land.

Most trees whose flowers are pollinated by the wind bloom in early spring, before the leaves open. This provides the best pollen in flower pistils.

Wind-pollinated plants never have bright, fragrant flowers with large petals that can hold pollen carried by the wind.

The wind picks up the pollen and takes it to the neighboring plants, from the flowers from which the spongy stigmas have emerged. When you get into flowers, pollen gets stuck in hairy stigmas. All this happens in just a few minutes.

Signs of plants pollinated by the wind.

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1. Trees and shrubs bloom even before the appearance of the first leaves. As long as there is no foliage, forests and parks are bare, pollen is easier to circulate, to jump into the wind. Thus, for example, blackberry, alder and hazelnut behave.

2. It does not have a perianto, and if so, it is underdeveloped (cereals).

3. The flowers are small, often collected in inflorescences (willow, wheat).

4. With this type of pollination, pollen is often wasted, flies uselessly, so the plant produces it with a large excess. The large and sticky dust particles also make no sense: they adhere to the environment and, therefore, the pollen is very small, dry and volatile.

5. It is very sad to stand on a plain and wait for pollination, so wind-pollinated plants prefer to form groups (birches, reeds).

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