-
spores are
always haploid.
Vascular plants are
either homosporous (or
isosporous) or heterosporous.
Plants that are
homosporous produce spores of the same...
- (reniform) spore-cases (sporangia)
contain spores of one kind only, (
isosporous, homosporous), and are
borne on the
upper surface of the leaf
blade of...
- day.
Early land
plants had
sporophytes that
produced identical spores (
isosporous or homosporous) but the
ancestors of the
gymnosperms evolved complex heterosporous...
- esparto, eusporangium, exospore, heterosporous, heterospory, homosporous,
isosporous, leptosporangium, megasporangium, megaspore, microsporangium, microspore...
- esparto, eusporangium, exospore, heterosporous, heterospory, homosporous,
isosporous, leptosporangium, megasporangium, megaspore, microsporangium, microspore...
-
aspects of
these plants. The
spores are of one size (i.e. the
plants are
isosporous) and are
borne on a
specialized structure at the apex of a
shoot called...
- and two
larger spores that
develop into
female gametophytes;
contrast Isosporous.
Annulus – in mosses,
cells with
thick walls along the rim of the sporangium...
