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Ovule - Definition and Overview |
| Related Words: Caviar, Egg, Ellipse, Oval, Ovoid, Ovum, Roe, Spawn, White, Yellow, Yolk |
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Structure found in seed plants that develops into a seed after fertilization. It consists of an embryo sac containing the female gamete (ovum or egg cell), surrounded by nutritive tissue, the nucellus. Outside this there are one or two coverings that provide protection, developing into the testa, or seed coat, following fertilization.
In angiosperms (flowering plants) the ovule is within an ovary, but in gymnosperms (conifers and their allies) the ovules are borne on the surface of an ovuliferous (ovule-bearing) scale, usually within a cone, and are not enclosed.
See also: Ovum
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Example Usage of Ovule |
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RenataBML: @HugoGloss Viu a foto do @nandomesquita lambusado de óleo no Ego? Ovule, veja lá |
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ConnorRemz: watching a pollen tube penetrate an Ovule in plant sex ;) its awesome |
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PaulaNunesz: RT @FChristianPior Peixes) Hoje você está romanticool, pronto pra dar, seu amor, seu calor... Ovule hj colega! Saia pra se divertir! bjs |
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