CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «ARCHEGONIA»
Descoperă întrebuințarea
archegonia în următoarea selecție bibliografică. Cărți în legătură cu
archegonia și extrase din aceasta pentru a furniza contextul de întrebuințare al acestuia în literatura Engleză.
In the female thalli of Riccia frostii yeast extract and casein hydrolysate stimulate
formation of archegonia at 0.5 and 50 ppm, respectively, but prove inhibitory at
higher levels. In this species peptone inhibits archegonial production (Vashistha,
...
2
Competition Science Vision
Sexual reproduction takes place by the formation of multicellular male and
female reproductive structures known as antheridia and archegonia respectively.
Funaria is monoecious but autoecious, i.e., the antheridia and archegonia
develop on ...
Gametangia The sex organs of mosses are archegonia (female) and antheridia (
male). The flask-shaped archegonium contains a single egg cell in the venter,
which is surmounted by an elongate neck. Numerous sperm cells are produced
in ...
Arthur Jonathan Shaw, Bernard Goffinet, 2000
4
Biology: A Functional Approach. Students' Manual
Observe anthcridiu and archegonia in surface view. Both are located on the
underside of the prothallus, as are the rhizoids. Archegonia are closer to the
apical notch than the antheridia (Figure 25. 6A). In good preparations coiled
sperm may ...
M. B. V. Roberts, T. J. King, 1987
5
Conifer Reproductive Biology
Photo 4.2 The megaspore membrane has been cut away from the haploid female
gametophyte at the micropylar end to show a Pinus taeda ovule with two
archegonia prior to fertilization (a) and another Pinus taeda ovule with a single ...
6
Botany For Degree Gymnosperm (M.E.)
P C Vashishta, A K Sinha, Anil Kumar, P.C.Vasishta. jacket surrounds the entire
archegonial complex. Normally the archegonia have a neck of four cells
arranged in one tier but in Cupressusfuniberis there may be two tiers of four to
eight cells.
P C Vashishta, A K Sinha, Anil Kumar, P.C.Vasishta
7
Investigations Into Gametophyte Morphology and Population ...
archegonia per plant on the dorsal surface (air side) increased with increasing
humidity (Figure 2, Tables 3 and 5). The number and percent of archegonia
produced on the ventral surface (substrate side) of the gametophyte decreased
as the ...
8
Ecology and Biogeography of Pinus
Archegonia, similar to those in ferns and mosses, are initiated on the surface of
the megagametophyte. The arche- gonia are composed of neck cells and a large
central cell. The central cell divides to produce a small ventral canal cell and a ...
David M. Richardson, 2000
9
An introduction to Bryophyta: diversity, development and ...
Archegonia mature and fertilization lakes place when disc of archegoniophore is
slightly above the thallus surface. After fertilization the stalk of the
archegoniophore starts elongating and there is tissue proliferation in the central
area of disc.
10
University Botany I : (Algae, Fungi, Bryophyta And Pteridophyta)
While the archegoniophore is young, archegonia develop on the upper surface of
the disc. The archegonia develop in a acropetal manner i.e. older archegonia at
the centre and the younger ones at the margins. There is a single row on each ...
ȘTIRI NOI CARE INCLUD TERMENUL «ARCHEGONIA»
Află ce ziare naționale și internaționale au scris despre și cum este întrebuințat termenul
archegonia în contextul următoarelor știri.
Melvin Way Is a Visionary Master
In one drawing, the word archegonia appears. The word signifies multicellular structures of plants that contain the ovum, or female gamete. «Vulture, Iun 15»
Green Space | Ferns for a summer shade garden
These produce male and female flower analogues (antheridia and archegonia), blah, blah, blah — you don't really care, do you? Essentially ... «The Courier-Journal, Iun 15»
There is more to ferns than interesting fronds
The thalli contains the sexual reproductive organs, the male antheridia and the female archegonia, either on the same thalli or separate thalli. «Bonners Ferry Herald, Mai 15»
Wordplay: the A to B of improving your vocabulary
I found the curio on page 92, avid to adopt another artefact ASAP, only to learn the aberration means "having antheridia and archegonia on the ... «Sydney Morning Herald, Apr 15»
Horsetails And The Hidden Marriage
The gametophytes (whether tufty mosses or creeping liverworts) produce female archegonia and male antheridia. The latter produce ... «Science 2.0, Mai 11»
