PAROLE IN INGLESE ASSOCIATE CON «HETEROSPORY»
heterospory
seed
habit
pteridophytes
homospory
advantage
selaginella
significance
heterospory
production
spores
different
sizes
sexes
sporophytes
land
plants
evolved
from
isospory
independently
several
plant
groups
devonian
period
part
process
evolution
timing
differentiation
botany
encyclopedia
britannica
life
history
occurs
characterized
morphologically
dissimilar
produced
types
merriam
webster
noun
ˈhe
ˌspȯr
ˌhe
ˈräs
principal
difference
between
separation
points
cycle
nevertheless
evolutionary
define
both
more
gymnosperm
alternation
generations
recall
mosses
dominated
generation
dependent
origins
role
jstor
gametophytic
unisexuality
necessarily
evolu
tionary
antecedents
rather
meaning
pronunciation
translations
most
iterative
researchgate
spatial
criteria
physiological
control
sensu
lato
long
been
popular
reiev
topics
diversity
strobili
pasta
quiz
think
your
head
wrapped
around
heterochrony
dimichele
william
davis
jerrold
olmstead
richard
origin
sporing
terms
with
reference
10 LIBRI IN INGLESE ASSOCIATI CON «HETEROSPORY»
Scopri l'uso di
heterospory nella seguente selezione bibliografica. Libri associati con
heterospory e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Paleobotany: The Biology and Evolution of Fossil Plants
LYCOPSID HETEROSPORY The lycopsids encompass a variety of reproductive
strategies ranging from homospory to heterospory, and in some cases evolved
reproductive structures that in many ways were functionally similar to seeds ...
Edith L. Taylor, Thomas N. Taylor, Michael Krings, 2009
Incipient heterospory is a phenomenon distinguished usually in fossil plants
where spores of different sizes were found within the same sporangium but size
of spores does not correspond to the sexes after their germination as in the case
of ...
S. P. Bhatnagar, Alok Moitra, 1996
3
Text Book Of Botany Diversity Of Microbes And Cryptogams
HETEROSPORY. Most of the pteridophytes produce only one kind of spores, i.e.,
they are homosporous. But some produce two kinds of spores, differing in size.
The smaller spores are called microspores and the larger ones megaspores.
I HETEROSPORY AND SEED HABIT The sporophytes reproduce asexually
producing spores in sporangia. When all the spores are alike i.e., almost of the
same size, the phenomenon is called homospory. However, in some
pteridophytes, ...
5
Botany For Degree Pteridophyta
The reduction in the number of megaspores has been achieved either through
reduction in number of spore mother cells, or by the disintegration of developing
spores. Importance of Heterospory The mo st important aspect of heterospory is ...
6
Conifer Reproductive Biology
Heterospory. All free-sporing land plants prior to the Middle Devonian were
dispersing a single bisexual spore (homospory) but by the Upper Devonian, a
few plants had developed large female spores (700–900 μm) and small male
spores ...
7
Diversity and Systematics of Seed Plants
Development. of. heterospory. An important advance towards the seed plant life
cycle came with the evolution of plants that produced two types of spores -
microspores and megaspores. All seed plants are thus heterosporous. The
contents of ...
Dr. Singh, Dr. Pande & Dr. Jain, 2009
8
Homoplasy: The Recurrence of Similarity in Evolution
Fortunately, as the pteridophytic “living fossils” case study demonstrates, other
lineages of putatively simplified pteridophytes have left a wider range of extant
descendants. i * THE RAMPANT PARALLELISM OF HETEROSPORY
Heterospory ...
Michael J. Sanderson, Larry Hufford, 1996
9
Cryptogams: Algae, Bryophyta and Pterldophyta
7.20 Discuss the significance of heterospory with reference to Selaginella.
Significance of heterospory with reference to Selaginella Selaginella is a
heterosporous pteridophyte. In reproduces by forming two kinds of spores the
microspores ...
10
Botany For Degree Gymnosperm (M.E.)
It is evident from these examples that with the development of heterospory there
is a significant shifting of the time of sex determination from the gametophyte to
the sporophyte. Palaeobotanical evidence of heterospory The origin of ...
P C Vashishta, A K Sinha, Anil Kumar, P.C.Vasishta