ERSC 4P80 Study Guide - Winter 2019, Comprehensive Midterm Notes - Zygote, Year, Xylem
13 Feb 2019
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Document Summary
Industrial revolution, burning of fossil fuels -> anthropogenic processes. Initiation of the temperature increase in the early 1900"s. Ice cores: ocean and lake sediments, historical documentary data, paintings, records of the hudson bay company -> trading posts, traded with first nations, travel logs of explorers (john franklin, alexander. Little soil, growing on broken bedrock, little vegetation: trees can lose 50% of their canopy and still survive, perseverance, eastern white cedar -> 1653 years. The evolution of trees and other woody plants: what are plants, chlorophyll (a & b, autotrophs, cell walls, cellulose -> polysaccharide, all have this. Life cycle of mosses: need water for sperm to travel, either sporophyte or gametophyte dominate (half and half, evolution is shifting to a dominat sporohptte. In most filmentous green algae the gametiphte (the filament) is much larger than the sprohoyte (represented by zygote). Susequent evolution has gradually shifted the emphasis to the sporophyte generation.
