Ovule - Wikipedia
Ovules are initially composed of diploid maternal tissue, which includes a megasporocyte (a cell that will undergo meiosis to produce megaspores). Megaspores remain inside the ovule and divide by mitosis to produce the haploid female gametophyte or megagametophyte, which also remains inside the ovule. The remnants of the megasporangium tissue ...
Gynoecium - Wikipedia
The ovule initially consists of a stalked, integumented megasporangium (also called the nucellus). Typically, one cell in the megasporangium undergoes meiosis resulting in one to four megaspores. These develop into a megagametophyte …
胚珠 - 百度百科
胚珠（ovule）为子房内着生的卵形小体，是种子的前体，为受精后发育成种子的结构。 被子植物的胚珠包被在子房内，以珠柄着生于子房内壁的胎座上。
Ovule – Definition, Structure, Types, Diagram, Functions
2024年9月1日 · An ovule is a small structure within the ovary of a plant that contains the female gamete (egg cell) and develops into a seed after fertilization.
Types of Ovary in Plants - GeeksforGeeks
2024年2月27日 · The ovary in plants contains one or more ovules, which develop into seeds upon fertilization. After fertilization, the ovary matures into a fruit, which protects and disperses the seeds. There are 3 types of ovary in plants depending on its …
Frontiers | The Evolution of Placentation in Flowering Plants: A ...
2022年3月7日 · The number of ovules found within the ovary, the number of carpels fusing to form the compound ovary, and the position of ovules within the ovary following the union of carpels have generated several types of placentation in flowering plants.
Ovule - Definition, Types, Components and Function - Biology …
2017年4月28日 · The ovule is part of the makeup of the female reproductive organ in seed plants. It’s the place where female reproductive cells are made and contained, and it is what eventually develops into a seed after fertilization, only for the seed to then ripen and produce a …
Ovule - an overview | ScienceDirect Topics
An anatropous ovule is one in which curvature during development results in displacement of the micropyle to a position adjacent to the funiculus base; this is the most common ovule type of the angiosperms and is presumed to be ancestral.
What is Ovule? Definition, Anatomy and Types - Biology Reader
You will get to know the definition, the structural components and the classification of ovule based on its position within the ovary. Content: Ovule. Definition of Ovule; Anatomy; Types of Ovule; Definition of Ovule. The ovule can be defined as the large sac or megasporangium that forms megasporocytes, which then yields megaspores.
Ovule - an overview | ScienceDirect Topics
Ovules and seeds characterize all seed plants (spermatophytes) (Bateman and DiMichele, 1994; Kenrick and Crane, 1997). Ovules consist of a nucellus and one or two integuments, with the nucellus being the megasporangium where meiosis takes place.