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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]
a sexual system for plants when female, hermaphrodite, and gynomonoecious plants coexist in the same population. [25]: 360 Monoicy: one of the main sexual systems in bryophytes. [18] In monoicy male and female sex organs are present in the same gametophyte. [19] Monoecy: a sexual system in which male and female flowers are present on the same ...
Nepenthes bokorensis has a racemose inflorescence measuring up to 100 cm in length. It bears up to 80 flowers borne on one-flowered pedicels (≤9 mm long), or rarely two-flowered partial peduncles. In male plants, the peduncle reaches 70 cm and the rachis 30 cm, while female plants produce a rachis up to 20 cm long.
Floral sexuality is related to the presence or absence of the reproductive whorls: androecium and gynoecium. Flowers that have both whorls (i.e., will produce both male and female gametes) are said to be perfect, bisexual, monoclinous or, more frequently, hermaphrodites, as is the case with potato flowers (Solanum tuberosum, Solanaceae
Flowering plants, the dominant plant group, [9]: 168 reproduce both by sexual and asexual means. Their distinguishing feature is that their reproductive organs are contained in flowers. Sexual reproduction in flowering plants involves the production of separate male and female gametophytes that produce gametes.
Skeletons of female (left) and Male (right) black-casqued hornbills (Ceratogymna atrata). The difference between the sexes is apparent in the casque on the top of their bill. This pair is on display at the Museum of Osteology. Sexual dimorphism may also influence differences in parental investment during times of food scarcity.
Nepenthes mirabilis at the Periyar Tiger Reserve, in Southern Western Ghats of India. Nepenthes species usually consist of a shallow root system and a prostrate or climbing stem, often several metres long and up to 15 m (49 ft) or more, and usually 1 cm (0.4 in) or less in diameter, although this may be thicker in a few species (e.g. N. bicalcarata).
One example is that male flowers are often larger than female flowers, at least in some species. Although this is presumably achieved through resource allocation mechanisms, it is unlikely that resource allocation from lower cost of androecium than gynoecium leading to higher expenditure on corolla in males, is a general and complete ...