seed plants Flashcards
what is the dominant form of seed plants
sporophyte (2n)
male gametophyte in seed plants
pollen grain
male gametophyte in seed plants
female gametophyte in seed plants
embryo sac
advantage of seed
o Contains food to get embryo established
o Embryo is partially grown rather than a single cell
o Seed coat protects seed and prevents death from water loss
seeds allow reproduction in…..
dry environments
gymnosperm means
naked seed
gymnosperm seeds
are not contained in fruits
gymnosperms seeds are produced in
cones
gymnosperms make ___ and ___
pollena and ovules
gymnosperm: dominant form
sporophyte (2n)
gymnosperm lifecycle
Male cones produce pollen
Female cones produce ovules
Wind fertilizes ovules
Cones are sealed closed while seeds develop
Cones open to release seeds (via wind)
gymnosperm: dominant form
sporophyte (2n)
example of gymnosperms
conifers, ginkgo biloba, cycads, gnetophytes
gymnosperm: dominant form
sporophyte (2n)