Search results
Results from the WOW.Com Content Network
In gynomonoecious species, the plants produce hermaphrodite flowers and separate male-sterile pistillate flowers. [36] One example is the meadow saxifrage, Saxifraga granulata. [39] Charles Darwin gave several other examples in his 1877 book "The Different Forms of Flowers on Plants of the Same Species". [40]
Gynodioecy / ˌ dʒ ɪ n oʊ d aɪ ˈ iː s i / is a rare breeding system that is found in certain flowering plant species in which female and hermaphroditic plants coexist within a population. Gynodioecy is the evolutionary intermediate between hermaphroditism (exhibiting both female and male parts) and dioecy (having two distinct morphs: male ...
Sexual selection is a common concept in animal evolution but, with plants, it is often overlooked because many plants are hermaphrodites. Flowering plants show many characteristics that are often sexually selected for. For example, flower symmetry, nectar production, floral structure, and inflorescences are just a few of the many secondary sex ...
The sex of a single flower may differ from the sex of the whole organism: for example, a plant may have both staminate and pistillate flowers, making the plant as a whole a hermaphrodite. Hence although all monomorphic plants are hermaphrodites, different combinations of flower types (staminate, pistillate, or perfect) produces distinct ...
The sporophyte of a flowering plant is often described using sexual terms (e.g. "female" or "male") based on the sexuality of the gametophyte it gives rise to. For example, a sporophyte that produces spores that give rise only to male gametophytes may be described as "male", even though the sporophyte itself is asexual, producing only spores.
Salicornia quinqueflora is characterized as gynodioecious, meaning that there are populations containing only hermaphrodite plants as well as populations containing both female and hermaphrodite plants. Most populations are entirely hermaphrodite except for the coasts of Nelson & Foxton, Tasman Bays, and the central regions of Otago in New Zealand.
In most plant species, an individual has both male and female sex organs (a hermaphrodite). [24] The life cycle of land plants involves alternation of generations between a sporophyte and a haploid gametophyte. [25] The gametophyte produces sperm or egg cells by mitosis. The sporophyte produces spores by meiosis, which in turn develop into ...
Among flowering plants with unisexual flowers, some also produce hermaphrodite flowers, and the three types may occur in different arrangements on the same or separate plants. Plant species can thus be hermaphrodite, monoecious, dioecious, trioecious, polygamomonoecious, polygamodioecious, andromonoecious, or gynomonoecious.