Search results
Results from the WOW.Com Content Network
Papaya Plant and fruit, from Koehler's Medicinal-Plants (1887) Conservation status Data Deficient (IUCN 3.1) Scientific classification Kingdom: Plantae Clade: Tracheophytes Clade: Angiosperms Clade: Eudicots Clade: Rosids Order: Brassicales Family: Caricaceae Genus: Carica Species: C. papaya Binomial name Carica papaya L. The papaya, papaw, is the plant species Carica papaya, one of the 21 ...
Most varieties of papaya are dioecious, having both male and female flowers on separate plants. Plants of each type must be present for these to produce fruit. Some papaya plants are capable of self-pollination, producing flowers that are either female or hermaphrodite with both male and female parts on the same flower.
Gynoecium (/ ɡ aɪ ˈ n iː s i. ə m, dʒ ɪ ˈ n iː ʃ i. ə m /; from Ancient Greek γυνή (gunḗ) 'woman, female' and οἶκος (oîkos) 'house'; pl.: gynoecia) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds.
The population produces normally male or female plants with unisexual flowers, but some plants may have bisexual flowers, some both male and female flowers, and others some combination thereof, such as female and bisexual flowers. The condition is thought to represent a transition between bisexuality and dioecy. [25] [26] Subgynoecious: having ...
Male sterility: The pollen grains of some plants are not functional. Such plants set seeds only after cross-pollination. Such plants set seeds only after cross-pollination. Dioecism : Cross-pollination always occurs when the plants are unisexual and dioecious , i.e., male and female flowers occur on separate plants, e.g., papaya, some cucurbits ...
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]
Dioecy (/ d aɪ ˈ iː s i / dy-EE-see; [1] from Ancient Greek διοικία dioikía 'two households'; adj. dioecious, / d aɪ ˈ iː ʃ (i) ə s / dy-EE-sh(ee-)əs) [2] [3] is a characteristic of certain species that have distinct unisexual individuals, each producing either male or female gametes, either directly (in animals) or indirectly (in seed plants).
The parts of a flower Double fertilization. Double fertilization or double fertilisation (see spelling differences) is a complex fertilization mechanism of angiosperms.This process involves the fusion of a female gametophyte or megagametophyte, also called the embryonic sac, with two male gametes (sperm).