The sexual cells of the medusoid lie in the endoderm on interradii, that is, on the second set of radii accentuated in the course of development.
In some other cases medusoid develops directly from medusoid (hypogenesis), whether by sexual cells or by gemmation.
In other cases the medusoid is hypogenetic, medusoid producing medusoid.
Hydromedusæ, the systematic arrangement of which is quite different according as this is based on the polypoid or on the medusoid generation.
Thus, the medusoid family of the oceanic Hydrozoa springs from polypites belonging to quite different families, and in each of these polypoid families there are species which produce Medusæ of another family.
By this time this little bud has assumed the form of a Medusoid or Jelly-Fish disk, with its four tubes radiating from the central cavity.
America and in Germany, possesses both an asexual hydroid and a sexual medusoid generation.
The medusoid generation is suppressed in this genus.
A sexual zooid produced as a medusoid bud upon a hydroid, sometimes becoming a free hydromedusa, sometimes remaining attached.
The gonophores of many of the species become free jellyfishes; those of other species remain permanently attached as medusoid buds or sporosacs.
A sexual zooid, ormedusoid bud of a hydroid; a gonophore.
The Athecata; -- so called because the medusoid buds are not inclosed in a capsule.
A hydrozoan reproductive zooid or gonophore which does not become medusoid in form or structure.
In these new colonies, again, the parts which are to become ovaries or testes float off, and ripen their products in free-swimming, medusoid organisms.
As these attain their full development, first one and then another is detached from the free end, floats off, and becomes a medusoid aurelia.
Many of the hydroid zoophytes, forming colonies of hydra-like organisms, give rise in the warm months to medusoid jelly-fish, capable of producing ova and sperms.
Defn: A sexual zooid produced as a medusoid bud upon a hydroid, sometimes becoming a free hydromedusa, sometimes remaining attached.
Defn: A sexual zooid, or medusoid bud of a hydroid; a gonophore.
Defn: The Athecata; -- so called because the medusoid buds are not inclosed in a capsule.
These colonial jellyfishes are floating or swimming colonies of polypoid and medusoid individuals in which there is a marked division of labor among the individuals, accompanied by marked differences in structural character.
They never appear in a polyp condition, but are always medusoid in shape.
Around the upper end of the central stem are many medusoid structures, the swimming-bells, by means of whose opening and closing the whole colony is made to swim through the water.
The jellyfish or medusoid body-form corresponds in general to an umbrella or bell.
There is, however, no evidence whatever for this, the gonads of Hydra being purely ectodermal structures, while all medusoid gonophores have an endodermal portion.
The most usual condition, however, is that in which sessilemedusoid gonophores or sporosacs are produced.
Simple polyps which become sexually mature and which also reproduce non-sexually, but without any medusoid stage in the life-cycle.
The entocodon is usually formed, proving the medusoid nature of the bud, but in sporosacs the entocodon may be rudimentary or absent altogether.
In Distichopora the gonophores have radial canals, but in other genera they are sporosacs with no trace of medusoid structure.
Haeckel, on the other hand, is in accordance with Balfour in regarding a Siphonophore as a medusome, that is to say, as a colony composed of medusoid persons or organs entirely.
It has been maintained that the gonads of Hydra represent sporosacs or gonophores greatly reduced, with the last traces of medusoidstructure completely obliterated.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "medusoid" in a variety of sentences. We hope that you will now be able to make sentences using this word.
