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PlantBio Life Cycles
Question | Answer |
---|---|
alternation of generations | sporophyte (2n) > sporangium (2n) > meiosis (diploid to haploid) > spore (n) > gametophyte (n) > gamete + gamete (n+n) > fertilization (haploid to diploid) > zygote (2n) > sporophyte (2n) |
life cycle bryophytes | gametophyte is dominant form , moss life cycle |
moss life cycle | gametophyte dominant ; sporophyte> capsule >meiosis >spore (n) > spore wall buds > gametophyte developing from bud (n) > antheridium(n) or archegonium (n)> fertilization > zygote in female (2n) > sporophyte begins to sprout -> sporophyte + gametophyte |
fern life cycle | sporophyte w sporangium underneath leaf (2n) > meiosis > spores (n) > germination of spores > archegonium on top (n) , antheridium on bottom (n)> fertilization via water > zygote (2n) > sporophyte develops |
gymnosperm life cycle | sporophyte > pollen cone > microsporangium and megasporangium > meiosis > 4 microspores and megaspore > mitosis > pollen grain and megagametophyte > pollination via wind > fertilization > 2 sperm cells zygotes > one survives > seed > sporophyte |