Seed

A seed is a small embryonic plant enclosed in a covering called the seed coat, usually with some stored food. It is the product of the ripened ovule of gymnosperm and angiosperm plants which occurs after fertilization and some growth within the mother plant. The formation of the seed completes the process of reproduction in seed plants (started with the development of flowers and pollination), with the embryo developed from the zygote and the seed coat from the integuments of the ovule. All seeds are different size, shape and colour.

Seeds have been an important development in the reproduction and spread of flowering plants, relative to more primitive plants such as mosses, ferns and liverworts, which do not have seeds and use other means to propagate themselves. This can be seen by the success of seed plants (both gymnosperms and angiosperms) in dominating biological niches on land, from forests to grasslands both in hot and cold climates.

The term "seed" also has a general meaning that antedates the above — anything that can be sown, e.g. "seed" potatoes, "seeds" of corn or sunflower "seeds". In the case of sunflower and corn "seeds", what is sown is the seed enclosed in a shell or husk, whereas the potato is a tuber.

Read more about Seed:  Seed Structure, Seed Production, Seed Functions, Seed Germination, Origin and Evolution, Seed Records

Famous quotes containing the word seed:

    A new word is like a fresh seed sown on the ground of the discussion.
    Ludwig Wittgenstein (1889–1951)

    I don’t think I was constructed to be monogamous. I don’t think it’s the nature of any man to be monogamous.... Men are propelled by genetically ordained impulses over which they have no control to distribute their seed into as many females as possible.
    Marlon Brando (b. 1924)

    On the whole, my respect for my fellow-men, except as one may outweigh a million, is not being increased these days.... Such do not know that like the seed is the fruit, and that, in the moral world, when good seed is planted, good fruit is inevitable, and does not depend on our watering and cultivating; that when you plant, or bury, a hero in his field, a crop of heroes is sure to spring up. This is a seed of such force and vitality, that it does not ask our leave to germinate.
    Henry David Thoreau (1817–1862)