Navigation Links
Megaspore


Megaspores, also called macrospores, are a type of spores that is present in heterosporous plants. These types of plants have two spore types, megaspores and microspores. Generally speaking, the megaspore, or large spore, germinates into a female (egg-producing)...
Full article >>>

Aspects of the topic megaspore are discussed in the following places at Britannica. Assorted References characteristics ( in spore (biology) ) ...gametophyte individuals that are entirely dependent upon the sporophyte plant. Gymnosperms and angiosperms form two kinds of spores: microspores, which give rise to male gametophytes, and megaspores, which produce...
Full article >>>

megaspore ( ) n. The larger of two types of spores that give rise to a female gametophyte. ... seed plants in which a megagametophyte develops from a megaspore? ...
Full article >>>

megaspore larger of the two types of spore produced in heterosporous plants; ... in seed plants in which a megagametophyte develops from a megaspore? ...
Full article >>>

GardenWeb Shopping Organization Directory Events Calendar Hortiplex Glossary ... megaspore. megaspore. The female spore of a heterosporous plant. See also: ...
Full article >>>

Register today for a free trial, credit card req'd. Find Journal of Paleontology articles plus many other academic journal articles, magazine articles & newspaper arc...
Full article >>>

A megaspore mother cell is a diploid cell in which meiosis will occur, resulting ... The one of these megaspore that remains divides mitotically and develops into ...
Full article >>>

This site descibes the formation of female gametes from ovule to meiosis to megaspore division to embryo sacs, female gametes and ultimately fertilization and ...
Full article >>>

megaspore a large spore produced in a megasporangium Source: Noland, George B. 1983. ... Iverson Software: Providing Reliable & Innovative Education Solutions ...
Full article >>>

Within the ovule, one diploid megaspore mother cell divides by meiosis to produce four haploid ... mitotic divisions of the haploid megaspore are labeled. ...
Full article >>>

... trends in seed (ovule) size and megaspore volume during the late Paleozoic. ... Key words: megaspore, paleoecology, Paleozoic, seed size, seeds, trends ...
Full article >>>

The new fern possesses megaspore complexes with three to four ... The megaspore wall ... megaspore either directly or by a columella (a ļ¬lamentous structure ...
Full article >>>

... cells thick, megasporocyte single, megaspore lacking sporopollenin and cuticle, ... The megaspore that germinates is often micropylar in other than Aroideae and ...
Full article >>>

Development of the megaspore. Pollination. Double fertilization. Seeds. Fruits ... Meiosis of the megaspore mother cell in each ovule produces 4 haploid cells: ...
Full article >>>

MEGASPORE - a female spore; one that grows into a gametophyte bearing archegonia ... 6. The megaspore develops inside the megasporangium, inside a specialized ...
Full article >>>

Shortly after the differentiation of the functional megaspore (Figures 7A and 7E ) ... indicating that the arrested functional megaspore does not acquire the identity ...
Full article >>>


'"/>


(Date:10/29/2014)... both genetic and environmental, have been blamed for ... Some, such as a family history of schizophrenia, ... Toxoplasma gondii , a parasite transmitted by ... viewed with skepticism. , A new study by ... at the University of Pennsylvania,s School of Veterinary ...
(Date:10/29/2014)... household and industrial products are in the environment – ... of them, scientists have yet to determine whether they ... toward doing that by estimating which substances people are ... in the ACS journal Environmental Science & Technology ... the risks to human health of any given substance ...
(Date:10/29/2014)... held in New York City on September 19, 2014, ... Cancer Society Professor of Genome Sciences and Medicine at ... Doctor of Philosophy of Tel Aviv University, was awarded ... , In addition to her honorary degree from TAU, ... TAU School of Medicine, and for the past 18 ...
Breaking Biology News(10 mins):Penn vet professor investigates parasite-schizophrenia connection 2Penn vet professor investigates parasite-schizophrenia connection 3Geneticist and humanitarian: Prof. Mary-Claire King receives Lasker Award 2
... and U.S. Department of Agriculture should jointly establish a ... the effectiveness of actions meant to improve water quality ... Gulf of Mexico, says a new report from the ... to move forward on the larger process of allocating ...
... Throughout history, human beings have used the whistle for everything ... orangutan,s spontaneous whistling is providing scientists at Great Ape Trust ... learning. In a paper published this month in Primates ... on all aspects of primates in relation to humans and ...
... could lead to a radical re-thinking about how the ... "Six of the adult females that we followed in ... out on the Arctic sea ice," said Universit Laval ... Gilles Gauthier as part of an International Polar Year ...
Cached Biology News:EPA and USDA should create new initiative to better monitor nutrients 2EPA and USDA should create new initiative to better monitor nutrients 3EPA and USDA should create new initiative to better monitor nutrients 4Orangutan's spontaneous whistling opens new chapter in study of evolution of speech 2Orangutan's spontaneous whistling opens new chapter in study of evolution of speech 3Snowy owl -- a marine species? 2
Other biology dictionary