-
Tetraspores are red
algae spores produced by the
tetrasporophytic (diploid)
phase in the life
history of
algae in the
Rhodophyta as a
result of meiosis...
-
exhibit three patterns of megasporogenesis: monosporic, bisporic, and
tetrasporic, also
known as the
Polygonum type, the
Alisma type, and the
Drusa type...
- "Morphological, genetic, and
interfertility analyses reveal a novel,
tetrasporic variety of
Agaricus bisporus from the
Sonoran Desert of California"....
-
number of
megaspores developing, as
either monosporic, bisporic, or
tetrasporic. [citation needed](RF)
Gynoecium Ovum
Alternation of
generations Meiosis...
-
monosporic embryo sac formation,
while all
members of
Anthemis have
tetrasporic embryo sac.
Anthemis and
Chamaemelum have some
differences in
fruit and...
- integument,
while the
nucellus is small. The
embryo sac or
megagametophyte is
tetrasporic, in
which all four
megaspores survive. The
style is
trilobate to trifid...
- megasporangium. The
embryo sac (megagametophyte)
varies by genera, but is
mainly tetrasporic (e.g. Fritillaria).
Embryo sacs in
which three of the four megaspores...
- star-shaped subgenus), smooth,
never verrucous and germ-free.
Basidia are
tetrasporic.
Cystidia with or
without crystalline crystals, spindle-shaped, convex...
- pseudo-basifixed.
fruit consists of a
loculicidal capsule,
seeds not winged.
Tetrasporic embryo-sac
formation with 7–8 nuclei.
Nucella having a
short base. Vesicular-arbuscular...
- showy. The
embryo sac (megagametophyte) is of the Fritillaria-type (
tetrasporic).
Capsule septicidal,
seeds often flattened,
exotesta palisaded or lignified...
