BIOL 232 Lecture Notes - Lecture 9: Algal Bloom, Saxitoxin, Dinoflagellate
Document Summary
Fungal diversity: zygomycota, ascomycota-ascogonium and antheridium plasmogamy (fusion of cytoplasm) in ascocarp in ascus- karyogamy occurs (karyogamy is fusion of nuclei) meiosis creates. 4 haploid cells 8 ascospores released and spread by wind. Includes expensive truffle: basidiomycota- typical mushroom, molds, yeasts, lichen. Conifer life cycle: reproductive structure: cones male(pollen) and female(seed, male- sporophyte makes microspores through meiosis male gametophyte (n) (pollen, female-in ovule megaspore mother cell (2n) meiosis 4 haploid cells 1 becomes. Megaspore (n) mitosis gametophyte (egg and endosperm mother cell: pollen and egg fuse zygote (2n) and endosperm (food source (n)) embryo seed falls out of cone lands on ground and grows into pine tree. Cell wall: protect, supports against gravity, maintains shape, reduces excessive water uptake, strong and rigid, secondary cell wall: between cell membrane and cell wall, cellulose synthase: creates cellulose in cell wall. Collenchyma: have primary and secondary cell walls, secondary cell wall is not thick and does not restrict growth, primary wall is thicker.
