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Heterospory

Heterospory is the production of spores of two distinct sizes and sexes by the sporophytes of vascular plants (in bryophytes, spore dimorphism is referred to as anisospory). 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…

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Microspores and megaspores

HaploidZygotePteris platyzomopsisExosporicGametophytes
9 related topics

Overview

SporesSporophytesVascular plantsBryophytesMicrospore
18 related topics

Origin of heterospory

Endospory
1 related topics

Reproduction

Angiosperms
1 related topics

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Overview

Origin of heterospory

Microspores and megaspores

Reproduction

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Map overview Semantic statistics

Heterospory

Nodes34
Edges33
Triples21
Avg. degree1.94
Density0.058824
Components1

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Heterospory

Top relations

related to Origin of heterospory · 15
Heterospory → Both, Devonian, Differing, Disruptive, During, For, Heterosporic, Heterosporous, In, It, Lepidophloios, Modern, Seed, The, This
related to Reproduction · 5
Heterospory → For, Haig-Westoby, The, This, While
is a · 1
Heterospory → production of spores of two distinct sizes and sexes by the sporophytes of vascular plants

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Important terminology

plants species spores female heterosporous male megaspores two spore gametophytes microspores produce larger plant endosporic separate smaller evolved extant microspore

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Heterosporyis aproduction of spores of two distinct sizes and sexes by the sporophytes of vascular plants0.90text
Heterosporyrelated to Origin of heterosporyHeterosporous0.60section
Heterosporyrelated to Origin of heterosporyIt0.60section
Heterosporyrelated to Origin of heterosporyDuring0.60section
Heterosporyrelated to Origin of heterosporyDevonian0.60section
Heterosporyrelated to Origin of heterosporyDisruptive0.60section
Heterosporyrelated to Origin of heterosporyThis0.60section
Heterosporyrelated to Origin of heterosporyIn0.60section
Heterosporyrelated to Origin of heterosporyDiffering0.60section
Heterosporyrelated to Origin of heterosporyFor0.60section
Heterosporyrelated to Origin of heterosporyLepidophloios0.60section
Heterosporyrelated to Origin of heterosporyThe0.60section

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