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ovule    音标拼音: ['ovjul]
n. 卵子;胚珠;小卵

卵子;胚珠;小卵

ovule
n 1: a small body that contains the female germ cell of a plant;
develops into a seed after fertilization
2: a small or immature ovum

Ovule \O"vule\, n. [Dim. of L. ovum an egg: cf. F. ovule. Cf.
{Ovolo}, {Ovulum}.] (Biol.)
(a) The rudiment of a seed. It grows from a placenta, and
consists of a soft nucleus within two delicate coatings.
The attached base of the ovule is the hilum, the coatings
are united with the nucleus at the chalaza, and their
minute orifice is the foramen.
(b) An ovum.
[1913 Webster]


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  • Ovule - Wikipedia
    In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells It consists of three parts: the integument, forming its outer layer, the nucellus (or remnant of the megasporangium), and the female gametophyte (formed from a haploid megaspore) in its center
  • Ovule | Definition, Description, Facts | Britannica
    ovule, plant structure that develops into a seed when fertilized A mature ovule consists of a food tissue covered by one or two future seed coats, known as integuments
  • Ovule – Definition, Structure, Types, Diagram, Functions
    What is Ovule? The ovule is a critical component of the female reproductive system in seed plants, playing an essential role in the production of seeds Located within the ovary of the carpel, the ovule houses the female gametes and is pivotal for seed development
  • OVULE Definition Meaning - Merriam-Webster
    The meaning of OVULE is a structure of a seed plant that gives rise to female reproductive cells and is found within the floral ovaries of angiosperms or are borne on female strobili of gymnosperms
  • Ovule: Structure, Types Functions Explained for Biology . . . - Vedantu
    The term ovule is used specifically for the structure in plants that becomes a seed The equivalent in female humans and animals is the ovum, or egg cell, which is released from a follicle in the ovary during ovulation
  • Ovule Structure and Types in Plant Reproduction
    Ovules are a fundamental component of plant reproduction, serving as the precursors to seeds once fertilization occurs Their structure and varying forms play a role in determining how plants reproduce and propagate across diverse environments
  • Ovule - an overview | ScienceDirect Topics
    Ovules are immature seeds, technically consisting of a megasporangium enveloped by one or more integuments (Chapter 5)
  • The Pistil, Megasporangium (ovule) and Embryo sac
    The ovule is a vital reproductive structure housed within the ovary of the gynoecium It is also referred to as the megasporangium, as it gives rise to the megaspore that eventually develops into the female gametophyte or embryo sac
  • Ovule - Biology Simple
    In plants, the ovule is the structure that gives rise to seeds after fertilization It contains the female reproductive cells and is crucial for the plant’s life cycle
  • Ovule of a Flower | Definition, Function Components - Study. com
    The ovule of an angiosperm is contained within the ovary of the pistil The ovule plays a crucial role in flower reproduction It is the organ within the plant that produces and houses egg cells





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