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1
The Comparative Embryology of Sponges
the granular cells become nurse cells, some of which get into the amphiblastula
cavity (Fig. 1.11c). Subsequently, the larval granular cells begin to divide and a
normal amphiblastula is formed. In all Calcaronea, different parent sponge cells,
...
Alexander V. Ereskovsky, 2010
Longitudinal section of the amphiblastula with externally directed flagella. (/)
Transverse section of the amphiblastula to show all four 'cellules en croix' (ccc). (
Redrawn from Tuzet 1963.) tier of cells above the equator of the amphiblastula
are ...
Patricia R. Bergquist, 1978
But Brien (1943) considers the development of Clathrina to be the most extended
: the blastula larva tends toward an amphiblastula state that is followed rapidly by
early immigration and the formation of a parenchymella. I do not see any ...
(c) Amphiblastula larva : The stomoblastula turns inside out through its mouth. As
a result the flagellar ends of the micromeres come out. The embryo now is called
as amphiblastula larva. Amphiblastula is the typical larva of all calcarean ...
Dr. M. C. Bhatnagar, Dr. Geeta Bansal
5
Biology of Coelenterata
There are two principal types of sponge larvae: amphiblastula and parenchymula
. The amphiblastula occurs in the development of calcareous sponges (Calcarea)
, mainly in members of the suborder Heterocoela (Sycandra, Grantia, etc.).
Dev Raj Khanna, P. R. Yadav, 2005
One of the following is correct for sponges (a) Planula, Cystecercus and Bladder
worm (b) Amphiblastula, Hydrula and Medusa (c) Parenchymula, Amphiblastula
& Cnidoblasts (d) Amphiblastula, Choanocytes and Spicules 64. Spongacoel is ...
7
Modern Text Book of Zoology: Invertebrates
Ultimately the amphiblastula settles down and undergoes gastrulation. Now the
macromeres multiply more rapidly than micromeres, so that the flagellated half of
larva is invaginated into and overgrown by the granular non-flagellated half.
8
Advances in Sponge Science: Phylogeny, Systematics, Ecology
In Calcispongiaep, the Calcineap share the presence of a coeloblastula (
calciblastula), while Calcaroneap share an amphiblastula which presents a
typical phenomenon of eversion during its morphogenesis (Manuel, 2006; for a
review, see ...
9
Fouling Organisms of the Indian Ocean
Now, the amphiblastula finds its way into excurrent canals and leaves the parent
through the osculum (figure 17). The amphiblastula forms a gastrula that has an
outer layer of granular cells called the ectosome, an inner layer of flagellated ...
10
Naturally Speaking: A Dictionary of Quotations on Biology, ...
Garstang, Walter The Amphiblastula is notable as a larval pioneer Who
disregarded all maxims of development each year: Half flagellate, Half amoeboid
, he takes his silent plunge, Adheres, and tucks his front end in, to build a baby
Sponge.
C.C. Gaither, Alma E Cavazos-Gaither, 2001
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «AMPHIBLASTULA»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
amphiblastula w wiadomościach.
Poetry In Larvae: The Love Songs of Walter Garstang
The Amphiblastula and the Origin of Sponges. • The Invaginate Gastrula and the Planula • The Origin of Cnidoblasts and Cnidozoa • Conaria ... «Booktryst, Wrz 12»
