The flowers are hermaphrodite and regular with parts in fives (pentamerous) throughout, though exceptions from the pentamerous arrangement occur.
The majority of species are hermaphrodite and many are capable of self-impregnation.
The fact that all the Euthyneura are hermaphrodite is not a fundamental difference; several Streptoneura are so, likewise Valvata, Oncidiopsis, Marsenina, Odostomia, Bathysciadium, Entoconcha).
(In Hydra, on the other hand, the individual is usually hermaphrodite.) The medusa always reproduces itself sexually, and in some cases non-sexually also.
The sexes are distinct (with the exception of a few forms that are hermaphrodite), and the male is always smaller than the female.
Leptonidae.-Shell thin; no siphons; foot long and byssiferous; marine; hermaphrodite and incubatory.
To allure and attract them to visit the flower the odoriferous secretions and gay colours are developed, and the position and complicated structure of the parts of the flower are adapted to the perfect performance of the process, It is comparatively rare in hermaphrodite flowers for self-fertilization to occur, and the various forms of dichogamy, dimorphism and trimorphism are fitted to prevent this.
When the male and female flowers of a species are found on separate plants, the term dioecious is applied, as in Mercurialis and hemp; and when a species has male, female and hermaphrodite flowers on the same or different plants, as in Parietaria, it is polygamous.
In the male of Phyllodromia the rudiment of a vestigial ovary becomes separated from the developing testis, indicating perhaps an originally hermaphrodite condition.
These forms are hermaphrodite, with an ovary and testis completely separate from each other on each side of the body, each having its own duct and aperture.
Cycladidae.-One siphon or two free siphons with simple orifices; pallial line simple; hermaphrodite, embryos incubated in external gill-plate; freshwater, Cyclas; British.
gamous flowers (that is, male, female and hermaphrodite), solitary, in slender, tubular spathes; the male flowers become detached and rise to the surface; the females are raised to the surface when mature, and receive the floating pollen from the male.
But even in plants with hermaphrodite flowers self-fertilization is often provided against by the structure of the parts or by the period of ripening of the organs.
The flowers hitherto regarded as female were in some cases at least hermaphrodite, FIG.
The gonads are paired and hermaphrodite, they form a pair of anterior prolongations of the pericardium, extending nearly to the anterior end of the body.
Hermaphrodite or bisexual flowers are those in which both these organs are found; unisexual or diclinous are those in which only one of these organs appears, - those bearing stamens only, being staminiferous or " male "; those having the pistil only, pistilliferous or " female."
- Follicles of the hermaphrodite gonads of Euthyneurous Gastropods.
The Pulmonata are, like the other Euthyneura, hermaphrodite, with elaborately developed copulatory organs and accessory glands.
Other Pulmonata exhibit variations of secondary importance in the details of this hermaphrodite apparatus.
Entocolax, mouth at free extremity, animal fixed by aboral orifice of pseudopallium, Pacific. Entoconcha, body elongated and tubular, animal fixed by the oral extremity, protandric hermaphrodite, parasitic in testes of Holothurians causing their abortion.
The animals being hermaphrodite copulate reciprocally.
Paniceae (about 25 genera, tropical to subtropical; a few temperate), a second flower, generally male, rarely hermaphrodite, is often present below the fertile flower.
When both are present the flower is hermaphrodite; and in descriptive botany such a flower is indicated by the symbol l.
In most cases the adults are hermaphrodite, but unisexual forms also occur, whilst the hermaphrodite adults may carry with them minute " complementary " males.
It remains to be seen if the ovuliferous cone in the centre of the flower represents simply a functionless gynoecium, as in Welwitschia and abnormal cones of certain Coniferae, or if the flowers were hermaphrodite, with both male and female organs fully developed.
It is probable that the flowers of Bennettites were normally hermaphrodite, and they may have been markedly protandrous.
k, Opening of the albuphrodite duct, which very soon becomes miniparous gland into P Y the hermaphrodite entwined in the spire of a gland - the duct.
The flowers, which are generally arranged in a cymose inflorescence, are hermaphrodite, hypogynous, and, except in Pelargoniums, regular.
18, and Paniceae), and in these the male flower of a spikelet always blooms later than the hermaphrodite, so that its pollen can only effect cross-fertilization upon other spikelets in the same or another plant.
The body bears tentacles, but shows no division into hydrorhiza, hydrocaulus or hydranth; it is temporarily fixed and has no perisarc. The polyp is usually hermaphrodite, developing both ovaries and testes in the same individual.
The latter opens e, Hermaphrodite duct into the common duct at the point k, (uterine portion).
Thus the whole of the Pulmonata (which breathe air, are destitute of gill-plumes and operculum and have a complicated hermaphrodite reproductive system) are either snails or slugs.
Hermaphrodite forms are unknown.
The flowers are hermaphrodite and regular, with the same number and arrangement of parts as in the order Liliaceae, from which they differ in the inconspicuous membranous character of the perianth, the absence of honey or smell, and the brushlike stigmas with long papillae-adaptations to wind-pollination as contrasted with the methods of pollination by insect agency, which characterize the Liliaceae.
In some Lamellibranchs - for instance, the European Oyster and the Pisidium pusillum - the sexes are united in the same individual; but here, as in most hermaphrodite animals, the two sexual elements are not ripe in the same individual at the same moment.
Amphogona, hermaphrodite, with male and female gonads on alternating radial canals.
A further degree of modification occurs when the male duct takes its origin from the hermaphrodite duct above the external opening, so that there are two distinct apertures, one male and one female, the latter being the original opening.
Hermaphrodite, the ovaries and testes distinct, with separate apertures.
The Platyelmia are hermaphrodite and the reproductive organs are complex.
Hermaphrodite; head with appendage on right side; radula without central tooth.
Enteroxenos, no pseudo pallium and no intestine, hermaphrodite, larvae with operculum.
h, Hermaphrodite duct.
From the ovo-testis, which lies near the apex of the visceral coil, a common hermaphrodite duct ve proceeds, which receives the duct of the compact white albuminiparous gland, Ed, and then becomes much enlarged, the additional width being due to the development of glandular folds, which are regarded as forming a uterus u.
- The Oligochaeta agree with the leeches and differ from most Polychaeta in that they are hermaphrodite.
Marsenina, Oncidiopsis, hermaphrodite.
All the Euthyneura are hermaphrodite.
The Pulmonata have a straight visceral nerve-loop, usually no operculum even in the embryo, and a multidenticulate radula, the teeth being equi-formal; and they are hermaphrodite.
edulis, are hermaphrodite.
- Siphons short and separate; branchial siphon with a large valve; branchial septum bears two groups of orifices on either side; hermaphrodite.
Chaetognatha are hermaphrodite.
The dorsoventral and the parapodial muscles are much developed, whilst the coelom is reduced mostly to branched spaces in which the genital products ripen, Full-grown myzostomids are hermaphrodite.
This echinoderm is a simultaneous hermaphrodite (male gonads and mature eggs occurring together ).
The two natural sexes of this organism are the self-fertilising hermaphrodite (essentially a modified female) and the male.
hermaphrodite flowers can appear single, in pairs or in close clusters on a small stalk.
hermaphrodite plants, THC content (no figures, but recommends Dutch varieties) training and pruning of plants.
Both males and hermaphrodite seam cell lineages are affected although the hermaphrodites do not exhibit any obvious gross morphological phenotype.
21, 22; compound creatures); (14) the hedgehog (pricks grapes upon its quills); (15) the fox (catches birds by simulating death); (16) the panther (spotted skin; enmity to the dragon; sleeps for three days after meals; allures its prey by sweet odour); (17) the sea-tortoise (or aspidochelone; mistaken by sailors for an island); (18) the partridge (hatches eggs of other birds); (19) the vulture (assisted in birth by a stone with loose kernel); (20) the ant-lion (able neither to take the one food nor to digest the other); (21) the weasel (conceives by the mouth and brings forth by the ear); (22) the unicorn (caught only by a virgin); (23) the beaver (gives up its testes when pursued); (24) the hyaena (a hermaphrodite); (25) the otter (enhydris; enters the crocodile's mouth to kill it); (26) the ichneumon (covers itself with mud to kill the dragon; another version of No.
Ctenidium bipectinate, free; hermaphrodite; fluviatile.
In the most primitive condition the genital duct is single throughout its length and has a single external aperture; it is therefore said to be monaulic. The hermaphrodite aperture is on the right side near the opening of the pallial cavity, and a ciliated groove conducts the spermatozoa to the penis, which is situated more anteriorly.
In front of the osphradium is the single genital pore, the aperture of the common or hermaphrodite duct.
between a fp, fa, k, 1, P, of some days - possibly weeks - the ova of the second Aplysia commence to descend the hermaphrodite duct; they become en FIG.
Hermaphrodite genital aperture, connected with the penis by a ciliated groove, except in Actaeon, Lobiger and Cavolinia longirostris, in which the spermiduct is a closed tube.
Genital duct monaulic; hermaphrodite duct connected with penis by a ciliated groove.
The generative apparatus of the snail (Helix) may serve as an example of the hermaphrodite apparatus common to the Pulmonata and Opisthobranchia (fig.
- Hermaphrodite Reproductive Apparatus of the Garden Snail (Helix horlensis).
y e, Hermaphrodite duct.
u, Uterine dilatation of the hermaphrodite duct.
The flowers are with few exceptions hermaphrodite, and regular with parts in threes (fig.
The cultivated vine has usually hermaphrodite flowers; but as it occurs in a wild state, or as an escape from cultivation, the flowers manifest a tendency towards unisexuality: that is, one plant bears flowers with stamens only, or only the rudiments of the pistil, while on another plant the flowers are bisexual.
The flowers are hermaphrodite and regular as in Iris (fig.
As a rule these medusae are of separate sexes, but hermaphrodite forms are known, for example, the conspicuous British (east-Atlantic) medusa Chrysaora (fig.
Persons with intersex states can be classified as a true hermaphrodite, a female pseudohermaphrodite, or a male pseudohermaphrodite.
In 2007, Passions continued its trend of tackling ground breaking storyline choices when Vincent revealed that he was a hermaphrodite and he was pregnant with his father's son.
Vincent the Hermaphrodite becomes pregnant.
The worm inhabits the lung of the frog and toad, and is hermaphrodite (Schneider) or parthenogenetic (Leuckart); the embryos hatched from the eggs find their way through the lungs into the alimentary canal and thence to the exterior; in a few days they develop into a sexual larva, called a Rhabditiform larva, in which the sexes are distinct; the eggs remain within the uterus, and the young when hatched break through its walls and live free in the perivisceral cavity of the mother, devouring the organs of the body until only the outer cuticle is left; this eventually breaks and sets free the young, which are without teeth, and have therefore lost the typical Rhabditis form.
In bisexual or hermaphrodite flowers, that is, those in which both stamens and pistil are present, though self-pollination might seem the obvious course, this is often prevented or hindered by various arrangements which favour cross-pollination.
u, Hermaphrodite gonad.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.