10 BÜCHER, DIE MIT «EMBRYO SAC» IM ZUSAMMENHANG STEHEN
Entdecke den Gebrauch von
embryo sac in der folgenden bibliographischen Auswahl. Bücher, die mit
embryo sac im Zusammenhang stehen und kurze Auszüge derselben, um seinen Gebrauch in der Literatur kontextbezogen darzustellen.
1
Embryogenesis in Angiosperms: A Developmental and ...
megaspores, three toward the micropylar pole of the ovule usually abort, leaving
the surviving one at the chalazal pole to develop into the embryo sac. This cell
enlarges at the same time that its nucleus undergoes three mitotic divisions to ...
Valayamghat Raghavan,
1986
2
Competition Science Vision
Worth to Remember ○ Polygonum type of embryo sac is most simple, most
primitive and normal type of embryo sac. ○ In an embryo sac, all the cells are
haploid except the secondary nucleus (2n). ○ In majority of angiosperms, the
chalazal ...
3
Competition Science Vision
Polygonum type of embryo sac is most simple, most primitive and normal type of
embryo sac. In an embryo sac, all the cells are haploid except the secondary
nucleus (2n). In majority of angiosperms, the chalazal megaspore is functional.
4
Handbook of Plant Science
Diplospory In diplospory, the unreduced embryo sac is derived from the
megaspore mother cell either directly by mitotic division or by aborted meiotic
events. Three major types of diplospory have been reported, named after the
plants in which ...
5
Competition Science Vision
Worth to Remember Polygonum type of embryo sac is most simple, most primitive
and normal type of embryo sac. In an embryo sac, all the cells are haploid except
the secondary nucleus (2n). In majority of angiosperms, the chalazal ...
6
Biology: The Dynamic Science
The eventual result of all these events is an embryo sac containing seven cells
and eight nuclei. ... HOW CHEMICAL CUES GUIDE EMBRYO SAC
DEVELOPMENT How do the four different types of embryo sac cells become
differentiated, ...
Peter Russell, Paul Hertz, Beverly McMillan,
2011
7
Advances in Rice Genetics
Megagametogenesis In the normal polygonum type, megagametogenesis in rice
went through the mononucleate embryo sac, two-nucleate embryo sac, four-
nucleate embryo sac, eight-nucleate embryo sac, and mature embryo sac phases
.
Gurdev S. Khush, Darshan S. Brar, Bill Hardy,
2003
8
Molecular Embryology of Flowering Plants
NUTRITION OF THE EMBRYO To a large extent, continued development of the
embryo depends upon its interaction with the milieu of the embryo sac, the
endosperm, and the cells of the ovule surrounding the embryo sac. Thus, in
contrast to ...
Valayamghat Raghavan,
1997
As a result of mitosis the primary micropylar nucleus of polygonum type of
embryo sac forms nuclei. The development of polygonum type of embryo sac
involves two divisions of and three divisions The definitive nucleus, in a
polygonum type of ...
10
Plant Cell Biology: Structure and Function
Each megaspore produces an 8- nucleate (usually) embryo sac, the mature
female gametophyte. One of the 8 nuclei is in the egg cell. Pollination delivers
pollen grains to the stigma and pollen tube growth down the style (Plate 58)
delivers ...
Brian E. S. Gunning, Martin W. Steer,
1996
9 NACHRICHTEN, IN DENEN DER BEGRIFF «EMBRYO SAC» VORKOMMT
Erfahre, worüber man in den einheimischen und internationalen Medien spricht und wie der Begriff
embryo sac im Kontext der folgenden Nachrichten gebraucht wird.
Cell Fusion Ensures Only One Sperm Gets Through
In most flowering plants, the mature ovule contains a seven-celled embryo sac consisting of two synergid cells, one egg cell, one central cell ... «Asian Scientist Magazine, Mai 15»
Doctors Remove Baby Skeleton Left Inside Mother for 38 Years
The embryo sac in yellow is located outside the uterus in pink.Getty Images. An Indian woman, Jyoti Kumar, from Central India has reportedly ... «International Business Times UK, Aug 14»
Margaret Lauterbach: A remarkable edible garden in Boise's North …
Temperatures below 41 degrees may be fatal to pollen, and pollen's movement through the tube to the embryo sac to create a fruit is extremely ... «The Idaho Statesman, Aug 14»
Salmon stay in local classrooms
... ago, Sarah J. Anderson Elementary School pupils quickly clambered for a peek at the tiny fish, each feeding on its own embryo sac. «The Columbian, Feb 11»
Stem cells from embryo sac could heal damaged hearts
Stem cells from embryo sac could heal damaged hearts Washington, May 29 : Stem cells obtained from a new non-controversial source - the ... «TopNews, Mai 10»
The secret of the egg
Once the egg is ready, workers inject the viral strain into the embryo sac. From this point on, the strain begins its own journey of reproduction. «China Daily, Nov 09»
Where Did All the Flowers Come From?
Flowers with a single set of female DNA in their endosperm, like water lilies, start out with a single nucleus at one end of the embryo sac. «New York Times, Sep 09»
At Long Last, How Plants Make Eggs
A gradient (red) in the concentration of the plant hormone auxin determines that only one of the eight nuclei in a plant's embryo sac will become ... «UC Davis, Jun 09»
South Pacific plant may be missing link in evolution of flowering plants
The novel embryo sac described in Nature is the first new type of egg-bearing apparatus to be discovered in flowering plants in more than 50 ... «EurekAlert, Mai 06»