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See all on WikipediaHeterospory - Wikipedia
Heterospory is the production of spores of two different sizes and sexes by the sporophytes of land plants. The smaller of these, the microspore, is male and the larger megaspore is female. Heterospory evolved during the Devonian period from isospory independently in several plant groups: the clubmosses, … See more
Wikipedia text under CC-BY-SA license Why did heterospory evolve? - Petersen - 2017
WEBOct 11, 2016 · The evolution of bimodal size distributions with small male spores and large female spores, known as heterospory, was an …
- Author: Kurt B. Petersen, Martin Burd
- Publish Year: 2017
Heterospory - an overview | ScienceDirect Topics
WEBHeterospory is the production of spores of generally two sizes (microspores and megaspores), each developing into a particular type of gametophyte—either a …
Endospory in plants - Wikipedia
There is debate as to whether endospory or heterospory evolved first. Some debate centers upon the requirement of endospory to develop before heterospory. Endospory is assumed to follow heterospory but it has been suggested that without endospory, early plant species dependency on water fertilization and environmental impacts on gametophytic gene expression would have reduced the chances of heterospory in the Late Devonian. Heterospory and endospory are ofte…
Wikipedia · Text under CC-BY-SA licenseWhy did heterospory evolve? - PubMed
WEBThe evolution of bimodal size distributions with small male spores and large female spores, known as heterospory, was an innovation that occurred repeatedly in the history of land …
Heterospory: History, Origin and Advantages - Biology Discussion
WEBIn this article we will discuss about:- 1. History of Heterospory 2. Incipience of Heterospory 3. Origin 4. Evidences 5. Advantages. History of Heterospory: Pteridophytes are the first …
Heterospory | botany | Britannica
WEBA heterosporous life history occurs in some pteridophytes and in all seed plants. It is characterized by morphologically dissimilar spores produced from two types of …
6.2: Pteridophyta - the Ferns - Biology LibreTexts
WEBMay 18, 2024 · In all, heterospory allows for separation between male and female haploid lineages. Male gametophytes become so small that they could easily be transported as a whole. Whole male gametophytes start …
Why Do Heterosporous Plants Have So Few Chromosomes?
WEBFeb 16, 2022 · In this review, we examined the multiple origins of heterospory in plants and considered which traits might be affecting their chromosome numbers, genome size, and …
Understanding the appearance of heterospory and derived plant …
WEBThe evolution of different spore size classes, or heterospory, is a fundamental reproductive innovation in land plants. The appearance of heterospory is particularly notable during …
WEBHeterospory was a pivotal innovation in the history of land plants. The divergence that defines heterospory – small, male microspores and large, female megaspores – …
Why did heterospory evolve? — Monash University
WEBHeterospory is the production of small male spores and large female spores in land plants. This article reviews the possible adaptive advantages of heterospory and …
The adaptive value of heterospory: Evidence from Selaginella
WEBMay 1, 2018 · Heterospory, the production of small male spores and large female spores, arose multiple times independently from homosporous ancestors that produced small …
HETEROSPORY: THE MOST ITERATIVE KEY INNOVATION IN …
WEBHeterospory reflects the convergent attainment of similar modes of reproduction in phylogenetically disparate lineages. Nature repeated this experiment many times, …
Key innovations in transition from homospory to heterospory
WEBMar 20, 2019 · Heterospory (i.e. dimorphic spores) is a long-lasting topic discussed in plant biology. It is observed in many of ferns, fern allies, and seed plants. The rise of …
Why did heterospory evolve? - Abstract - Europe PMC
WEBOct 11, 2016 · The evolution of bimodal size distributions with small male spores and large female spores, known as heterospory, was an innovation that occurred repeatedly in the …
Understanding the appearance of heterospory and derived plant ...
WEBThe evolution of different spore size classes, or heterospory, is a fundamental reproductive innovation in land plants. The appearance of heterospory is particularly notable during …
Gametophyte - Wikipedia
WEBIt is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. The gametophyte is the sexual phase in the life cycle of plants and …
Heterospory Definition & Meaning - Merriam-Webster
WEBThe meaning of HETEROSPORY is the production of microspores and megaspores (as in seed plants).
(PDF) Heterospory: the most iterative key innovation in the ...
WEBAug 1, 1994 · reveals serious gaps in current knowledge of heterospory that emphasize the need for phylogenies to elucidate patterns of character acquisition. In order to discuss what
Silurian-Devonian Terrestrial Revolution - Wikipedia
WEBThe Silurian-Devonian Terrestrial Revolution, also known as the Devonian Plant Explosion ( DePE) [ 1] and the Devonian explosion, was a period of rapid colonization, diversification …
heterospory - Wiktionary, the free dictionary
WEBheterospory. (botany) The production of spores of two different sizes and sexes by the sporophytes of land plants.
Sporophyte - Wikipedia
WEBA sporophyte (/ ˈspɔːr.əˌfaɪt /) is the diploid multicellular stage in the life cycle of a plant or alga which produces asexual spores. This stage alternates with a multicellular haploid …
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