Q:

How does plant fertilization occur?

A:

Quick Answer

Fertilization in plants occurs when pollen grains are transported from anthers to stigma. When ripe pollen from an anther catches on the stigma of the same kind of flower, each pollen grain sends out a small thread-like tube.

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Full Answer

Fertilization occurs after pollination, when pollen grains land on the stigma of a flower of the same species. During this time, a series of events take place leading to the formation of seeds. A pollen grain on the stigma develops a tiny tube that runs down the style of the ovary. The pollen tube contains a male gamete which meets the female gamete in the ovule. Fertilization occurs when the two gametes combine and their chromosomes join. The resulting product is a normal complement of chromosomes, with some from either parent flower. The fertilized ovule forms a seed, which consists of a food reservoir and an embryo that later develops into a new plant. In gymnosperms (conifers) male gametes are enclosed in pollen grains and are transmitted by wind or insects to the female reproductive organs. Fertilization in angiosperms (flowering plants) occurs when insects or other animals transport the pollen to the female reproductive organ (pistil).

Fertilization is the fusion of gametes to launch the development of a new individual organism. In animals, the process entails the combination of ovum with a sperm, leading to the development of an embryo. Fertilization in plants occurs when haploid gametes meet to create a diploid zygote, which eventually forms an embryo.

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Related Questions

  • Q:

    What is the function of a flower's style?

    A:

    In plants, the style is the long, slender stalk that connects the stigma to the ovary. The stigma is where the pollen is deposited, and the ovary is at the bottom of the style and houses the plant's ovules, which contain the egg cells. The function of the style is to check compatibility and judge whether the pollen that lands on the flower can fertilize the plant.

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  • Q:

    Which part of a plant receives pollen?

    A:

    The part of a plant that receives pollen is called the stigma. The stigma is located at the top of the style, the tube that extends out of the ovary. Together, the stigma, style and ovary are known as a pistil or carpel, the female reproductive organ of a flower.

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  • Q:

    What is the function of a flower?

    A:

    The purpose of a flower is to attract pollinators to a plant to aid in fertilization so that the plant creates seeds. Bright colors, strong scents and sweet nectar all work together to attract birds, bees and other insects to move pollen from one flower to another. After pollination occurs, the flower develops seeds.

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  • 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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