BIOL 1209 Lecture : Bio 1202 Final Notes
Document Summary
Coevolution of flowers and pollinators symbiotic relationship pollen (hit or miss stradegy: ensure pollination takes place only specific pollinators can access, attract pollinators using colors and scents, so, stop unwanted visitors using physical modicfications i. e tubes that. Wind pollinated flowers: inconsicuious and unscented, produce lots of. Animal pollinated flowers flower sporophyte plant (multicellular diploid plant), majority of life is female gametophyte start with 1 megaspore, rouds of mitosis, 1-4-7: embryo sac female gametophyte, producs egg cells. Sac development going to exist only in sporpphyte stage, it will produce flwoers which will produce a gmetophyte (multicellular haploid plant) rounds of division to eventually produce 4 haploid cells, pollen tube cell, sperm cell, and. Develop inside the multicellular sporophyte flowers, very small and. Pollen developed within the pollen sacs parasitic (cant live on their own) Pollen grain 2 sperm cells results in 7 cells cells. Angiosperm gametophyte development: 1 cell, 1 primary endosperm cell with 2 nuclei, 5 cells that degenerate.