BIO 127 Notes from Monday 2/8/16
BIO 127 Notes from Monday 2/8/16 630247
Pennsylvania State University Altoona
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This 2 page Class Notes was uploaded by Sarah Jessica Harris on Tuesday February 9, 2016. The Class Notes belongs to 630247 at Pennsylvania State University Altoona taught by Dr. James Winsor in Spring 2016. Since its upload, it has received 14 views. For similar materials see Introduction to Plant Biology in Biology at Pennsylvania State University Altoona.
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Date Created: 02/09/16
(THESE NOTES SHOULD BE USED IN ADDITION TO THE SLIDES THAT THE PROFESSOR POSTS ON ANGEL) Saturation Field Capacity most, but not all of the cohesion water is gone Three Kinds of Water: Gravitational will drain away naturally (abundant) Cohesion beneath field capacity (wilting point towards the lower spectrum) Adhesion p lant can't get any water at this level (deepest) (these are measured by how strongly it is held by the water) Difference between texture and structure texture is about what the soil is made up of (clay, sand, silt) structure is about the degree of degradation. Horizons: A Horizon usually light, almost bleached, scarce in minerals B Horizon darker in color, more fertile than A Horizon C Horizon dark, fertile R Horizon bedrock Leaves: Simple blades, petiole (leaf stock), and stipules Palmately Compound l eaflets come from a single point Pinnately Compound l eaflets come from a linear stock Layer Order: Upper Epidermis > Palisade Mesophyll > Spongy Mesophyll > Lower Dermis Upper Epidermis covered in a layer of cutin, contains fewer stomates Palisade Mesophyll full of chloroplasts (photosynthesis) Spongy Mesophyll loosely packed (air spaces) good for gas exchange and photosynthesis Lower Dermis Thinner cuticle, contains more stomates