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From Troides helena cerberus it differs as follows: . Male forewing: adnervular pale streaks not prominent on the upperside, more distinctly marked on the underside. Hindwing black, with a very broad discal slightly curved silky-yellow band or patch that extends beyond the cell from interspaces 2 to 7, and is composed of elongate outwardly emarginate yellow markings that are divided only by ...
The egg cell or ovum (pl.: ova) is the female reproductive cell, or gamete, [1] in most anisogamous organisms (organisms that reproduce sexually with a larger, female gamete and a smaller, male one). The term is used when the female gamete is not capable of movement (non- motile ).
The human female reproductive system is made up of the internal and external sex organs that function in the reproduction of new offspring. The reproductive system is immature at birth and develops at puberty to be able to release matured ova from the ovaries , facilitate their fertilization , and create a protective environment for the ...
Women in Sri Lanka make up to 52.09% of the population according to the 2012 census of Sri Lanka. [7] Sri Lankan women have contributed greatly to the country's development, in many areas. Historically, a masculine bias has dominated Sri Lankan culture , although woman have been allowed to vote in elections since 1931 . [ 8 ]
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A sexual system is a distribution of male and female functions across organisms in a species. [1] [2] The terms reproductive system and mating system have also been used as synonyms. [3] Sexual systems play a key role in genetic variation and reproductive success, and may also have led to the origin or extinction of certain species. [4]
[note 1] A carpel is the female reproductive part of the flower—usually composed of the style, and stigma (sometimes having its individual ovary, and sometimes connecting to a shared basal ovary) —and usually interpreted as modified leaves that bear structures called ovules, inside which egg cells ultimately form. A pistil may consist of ...
Location of ovules inside a Helleborus foetidus flower. 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.