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Heterospory is the
production of
spores of two
different sizes and ****es by the
sporophytes of land plants. The
smaller of these, the microspore, is male...
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During the
Devonian period several plant groups independently evolved heterospory and
subsequently the
habit of endospory, in
which the
gametophytes develop...
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whether endospory or
heterospory evolved first. Some
debate centers upon the
requirement of
endospory to
develop before heterospory.
Endospory is ****umed...
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diploid sporogenous tissue. Bateman, R.M.; Dimichele, W.A. (1994). "
Heterospory - the most
iterative key
innovation in the
evolutionary history of the...
- A
gametophyte (/ɡəˈmiːtəfaɪt/) is one of the two
alternating multicellular phases in the life
cycles of
plants and algae. It is a
haploid multicellular...
- the
genera Marsilea, Regnellidium, Pilularia, Salvinia, and Azolla.
Heterospory also
occurs in the
lycopods in the
spikemoss genus Selaginella and in...
- ISBN 9780521707725. Petersen, Kurt B.; Burd,
Martin (2018). "The
adaptive value of
heterospory:
Evidence from Selaginella". Evolution. 72 (5): 1080–1091. doi:10.1111/evo...
- diaspore, endospore, esparto, eusporangium, exospore, heterosporous,
heterospory, homosporous, isosporous, leptosporangium, megasporangium, megaspore...
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spores which are all of the same size.
Spores of two
distinct sizes (
heterospory or anisospory):
larger megaspores and
smaller microspores. When the two...
- a
megagametophyte and
swims inside to
fertilize the egg.
Outside of
heterospory, a
distinguishing feature of
Isoetes (and Selaginella) from
other pteridophytes...
