BIOL120 Lecture Notes - Lecture 4: Dicotyledon, Sporophyte, Basal Angiosperms

• School: University of Waterloo
• Department: Biology
• Course: BIOL120
• Professor: Susan Lolle

Document Summary

The (cid:449)o(cid:396)ld"s la(cid:396)gest a(cid:374)d tallest pla(cid:374)ts (cid:271)elo(cid:374)g to the phylu(cid:373) (cid:272)o(cid:374)ife(cid:396)ophyta. Da(cid:396)(cid:449)i(cid:374)"s a(cid:271)o(cid:373)i(cid:374)a(cid:271)le (cid:373)yste(cid:396)y (cid:396)efe(cid:396)s to the (cid:396)apid sp(cid:396)ead a(cid:374)d do(cid:373)i(cid:374)atio(cid:374) of flo(cid:449)e(cid:396)i(cid:374)g plants. Sepals are the green structures under of between the petals. Stamen where the pollen is, produces it. Anther is where pollen is contained and filament allows it to be pushed up and out. Carpel (stigma, style, ovary) is a variation of a sphorophyte/sporophyll. A sporophyll is a spore producing leaf. Carpels are floral organs are thought to be a type of modified sporophyll. Eudicots are true dicots (two seed leaves) Have to have an opening for pollen to enter, like gymnosperms and monocots. Monocots have pollen with one opening, one embryonic leaf (monocot) Eudicots make up the vast majority of living angiosperms. When the pollen grain lands on the stigmatic opening, there are 3 possible exit routes. You cannot germinate successfully an orchid seed unless you have a fungal partner.