BIOA02H3 Lecture Notes - Sub-Bituminous Coal, Cutin, Suberin

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3 Feb 2013
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BIOA02H3 Full Course Notes
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Freom tree to seed: transport in plants, plant nutrition and soils, plant defense, plant life on the edge. Lecture 1-2 outline: basal tree of life, bryophytes- liverwort, mosses, hornworts, lycophytes, ferns, gymnosperm, angiosperm. The origins of bryophyes are unknown: bryophytes: liverworts (marchantia polymorpha) Male reproductive structure: antheridia, male liverwort, umbrella shaped. Female reproductive structure: archegonia, female liverwort, cloudy shaped. Hornworts: flat body tissues which is smaller than liverworts: gametophyte, through mitosis, gametes egg and sperm is produced, fertilization of gamete, zygote=mitosis, embryo. Generation (2n: sporophyte->meiosis, spore, spore-> mitosis (germination, gametophyte, embryo->mitosis, sporophyte. Figure 2. so all are mitosis except from sporophyte into spore. Haploid generation of mosses need water to fertilize. Protonema (n) then young developing gametophyte (n) either male or female. In broyophytes, gametophyte feed sporophyte, meaning sporophyte depends on gametophyte. Spermatozoid travel in short distance because it"s only in water ( water disperal). They lose and take up water very quickly.

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