Q:

What is pollination?

A:

Pollination is the transfer of pollen grains from a flower’s anthers to the same or another flower’s stigmas. Pollens are moved from flower to flower by pollinators, such as butterflies, bees, beetles, moths, bats and birds. The wind also helps in pollination.

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Pollination leads to fertilization, which is the fusion of nuclei in the ovule with nuclei from the pollen grain. After successful fertilization, the flower starts to develop seeds. The production of seeds and fruits is contingent on pollination.

Some plants develop seeds through self-pollination, wherein the same plant possesses both pollen and pistil. Others need cross-pollination, wherein pollen and pistil come from different plants. Most plants need the help of pollinators to move pollen to the pistil.

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Related Questions

  • Q:

    What is the difference between pollination and fertilization?

    A:

    Pollination is the process whereby pollen grains move from the anther to the stigma on a flower’s style, while fertilization is the fusion of the male gametes and female egg cells to form a new plant seed. Pollination precedes fertilization and depends on such media as wind, water and insects. Pollination takes place externally, while fertilization occurs in the inside of the flower and does not depend on external vectors.

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  • Q:

    What is wind pollination?

    A:

    Wind pollination occurs when the pollen from flowers is transported by the wind. It is also known as anemophily, and it occurs every day to pollinate crops and trees.

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  • Q:

    What is artificial pollination?

    A:

    Artificial pollination is the process of applying pollen to plants that would normally be applied by the insects that pollinate plants. Artificial pollination can be accomplished with the use of a brush to apply the pollen. This is a technique similar to the one biologist Mendel used while studying genetics and inheritance. There are several benefits to artificial pollination, including gaining greater control over the genetic population of the crops.

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  • Q:

    What are some examples of ductile metals?

    A:

    Gold and platinum are the most ductile metals on the periodic table of elements. Metals like copper, iron, nickel, manganese, silver, iridium, osmium, tungsten, tantalum, hafnium, rhenium, tin and zirconium can be drawn into very long wires. An ounce of gold can be drawn into a wire 50 miles long.

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