BIOA02H3 Lecture Notes - Lecture 10: Stoma, Biogenic Substance, Dune
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BIOA02H3 Full Course Notes
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From tree to seed: transport in plants, plant nutrition and soils, plant defense, plant life on the edge. Lecture 10 notes (plant nutrition & soils: nutrients necessary for plant life. From high elements needed to low elements needed. Then micronutrient: cl>fe>b>mn>na>zn>cu>ni>molybdenum(mo) required in smaller amounts. Absence prevents plant from completing its life cycle. When ice melt, there is no bacteria in the sugar=no n=no plant growth. Essential building block for life, basic metabolism, photosynthesis. Young soils (dune, volcanic soil, ice glaciers) limit n until bacteria build up. Building blocks of life: amino acid into protein. Glycine, alanine, serine, threonine, cysteine, valine, leucine, isoleucine, methionine, proline, phenylalanine, tyrosine, tryptophan, apsartic acid, glutamic acid, asparagine, glutamime. Atcg so let"s start with atmosphere nitrogen gas. Nitrogen gas has 3 ways to turn into reactive nitrogen. Path 1: n2 > lightning> into soil> nitrate. Path 2: n2> nitrogen fixation soil bacteria>decomposition>amino acid>ammonia>nitrite>nitrate.
