与 «ANTHERIDIUM»相关的英语书籍
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antheridium的用法。与
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1
Competition Science Vision
Sexual reproduction — In Riccia sexual reproduction occurs by means of male
and female sex organs called, antheridia and archegonia respectively.
Antheridium — The mature antheridium is an elongated structure consisting of an
ovoid or ...
2
University Botany I : (Algae, Fungi, Bryophyta And Pteridophyta)
Structure and development of Antheridium : Mature antheridium consists of a
small stalk and elongated club shaped antheridium. The wall of the antheridium
consists of single layer of jacket cells. Inside the jacket layer is a mass of
androcytes.
GAMETANGIA ANTHERIDIUM In the parenchymatous cells of the antheridial wall
of Sphagnum the main components are nucleus, starch-laden plastids.
mitochondria, fat bodies, tubules, Golgi bodies, vesicles, and granules (Manton,
1957).
4
Text Book Of Botany Diversity Of Microbes And Cryptogams
The male and female reproductive structures are known as antheridium and
oogonium respectively. Some species of Phytophthora (e.g., P. himalayensis) are
homothallic, whereas the others (e.g., P. palmivora, P. infestans) heterothallic.
5
Systematics and Evolution
P. The Antheridium and the Fertilization Process The morphology and
morphogenesis of the antheridium (Figs. 15, 16. 19) are simpler than those of the
oogonium. and the antheridial wall is seldom much thicker than that of the
subtending ...
David J. McLaughlin, Karl Esser, Paul A. Lemke, 2001
6
A Morphological Study of Some Members of the Genus Pallavicinia
The young antheridium arises very near the apex of the thallus, as a single large
cell, projecting from the side of the midrib (Fig. 1o, A). The first division wall is
transverse, and separates a basal cell which takes no part in the development of
...
A Morphological Study of Some Members of the Genus Pallavicinia, 1914
7
Krishna's Diversity of Microbes, Fungi & Lichens
A young antheridium is thin walled and multinucleate. The an tkeridium is
separated by a septum from its stalk. The mature antheridium is funnel-shaped
and form a collar like structure at the base of mature oogonium (Fig.5.9A-D, Fig.
5.10F-H) ...
8
Developmental Biology of Fern Gametophytes
This precocious antheridium formation is under phytochrome control.
Interestingly enough, antheridia appear on gametophytes grown in light only in
the presence of antheridiogen. These results have led to the suggestion that
induction of ...
Pooja. Antheridial initial Antheridial initial Primary androgonial Jacket cells / ce||
Jacket Primary androgonial cell Flagella Antherozoid Fig. 6. 10. Stages in
development of antheridium of Equisetum telmateia. A, B — Early stages in the ...
10
Botany for Degree Students Part-III: Bryophyta
To its posterior end is attached a vesicle-like structure consisting of a cytoplasmic
matrix. (ii) Dehiscence (Fig. 16. 12). The mature antheridium dehisces following
absorption of water. B A C The jacket cells 'of the_swollen antheridium undergo ...
B R Vashishta, A K Sinha, Adarsh Kumar, 2011
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Swollen Members - Brand New Day
... triplet deliveries, and sprinkle in random references to everything from Star Wars Storm Troopers to goblins and antheridium isotopes. «HipHopDX, 六月 14»
Moss: Beautiful, but misunderstood
The green plant we see is the sexual stage, which produces gametes (sperm-antheridium and egg-archegonium). Moisture is necessary for ... «Timesonline.com, 五月 14»
How Mosses Have Sex in Spite of Their Swimming-Challenged Sperm
The small sperm are weak swimmers and carry limited energy for their travels. Once released from the antheridium, the clock begins to count ... «Scientific American, 七月 12»
