-
always haploid.
Vascular plants are
either homosporous (or isosporous) or heterosporous.
Plants that are
homosporous produce spores of the same size and type...
-
during development or
later in life. In the fern
Ceratopteris and
other homosporous fern species, the
default **** is hermaphrodite, but
individuals which...
- fungi.
Homosporous ferns secrete a
chemical called antheridiogen.
Extant lycophytes produce two
different types of gametophytes. In the
homosporous families...
- they are cosmopolitan,
excluding arid environments.
Lycopodiaceae (
homosporous lycophytes)
split off from the
branch leading to
Selaginella and Isoetes...
- spore-cases (sporangia)
contain spores of one kind only, (isosporous,
homosporous), and are
borne on the
upper surface of the leaf
blade of specialized...
-
Ceratopteris is the only
genus among homosporous ferns that is
exclusively aquatic. It is pan-tropical and
classified in the
Parkerioideae subfamily of...
-
plants had
sporophytes that
produced identical spores (isosporous or
homosporous) but the
ancestors of the
gymnosperms evolved complex heterosporous life...
- Lycopodiales,
Isoetales and Selaginellales. Club-mosses (Lycopodiales) are
homosporous, but the
genera Selaginella (spikemosses) and
Isoetes (quillworts) are...
-
monopodial growth is exhibited. Some were
heterosporous but
others were
homosporous.
Progymnosperms are a
paraphyletic grade of plants.
Stewart WN, Rothwell...
- non-vascular plants, as well as many
lycophytes and most ferns, are
homosporous (only one kind of
spore is produced). Some lycophytes, such as the Selaginellaceae...
