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For example, male inflorescence in plants often produce more flowers than females . Furthermore, pollen export and ultimately paternity, often increases with flower number, even for plants with hermaphroditic flowers. Retention of older flowers with no pollinator rewards can lead to increased pollinator visitation rate and increased pollen removal.
However, selection for ornamentation within this species suggests that showy female traits can be selected through either female–female competition or male mate choice. [59] Since carotenoid-based ornamentation suggests mate quality, female two-spotted guppies that develop colorful orange bellies during breeding season are considered ...
Male and female flowers evolve from hermaphroditic flowers [19] via andromonoecy or gynomonoecy. [20]: 148 In amaranths monoecy may have evolved from hermaphroditism through various processes caused by male sterility genes and female fertility genes. [20]: 150 Monoecy may be an intermediate state between hermaphroditism and dioecy. [21]
The male gametophytes, which produce sperm, are enclosed within pollen grains produced in the anthers. The female gametophytes are contained within the ovules produced in the ovary. [2] [3] In some plants, multiple flowers occur singly on a pedicel (flower stalk), and some are arranged in a group (inflorescence) on a peduncle (inflorescence ...
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Androdioecious: having male flowers on some plants, bisexual ones on others. [6] Androecious: having only male flowers (the male of a dioecious population); producing pollen but no seed. [16] Androgynous: see bisexual. [6] Androgynomonoecious: having male, female, and bisexual flowers on the same plant, also called trimonoecious. [16]
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