gymnosperm
Germination is the process that leads to the sprouting of a seedling from a seed of a spermatophyte.
Spermatophytes were most diverse during the Carboniferous Period due to the change in climate.
The great adaptive potential of physiological dormancy is associated with high diversification of spermatophytes.

SMART Vocabulary: related words and phrases

Types of plant
acanthus
air plant
amaranth
Andromeda
angiosperm
early
emergent
evergreen
fiddlehead
grower
moss
mossy
mugwort
mustard
non-hardy
spleenwort
starter plug
succulent
sundew
tenderness