PLANTS AND PEOPLE - LECTURE NOTES
Hugh D. Wilson

1.  INTRODUCTIONS
2.  SYLLABUS

    A.  TEXT SEQUENCE - LEVELS OF RESPONSIBILITY
        1)  PRESENT IN TEXT (possible test question)
        2)  PRESENT IN TEXT, MENTIONED IN CLASS (likely test question)
        3)  PRESENT IN TEXT, WRITTEN ON BOARD (most likely test question)
        4)  NOT PRESENT IN TEXT-MENTIONED OR WRITTEN ON BOARD [EITHER A DIGRESSION OR IMPORTANT]
        5) EXAM QUESTIONS SHORT ANSWER OR ESSAY [LOOK FOR LISTS, COMPARE AND CONTRAST, AND 'LINKAGE' QUESTIONS

    B.  TERM PAPER - WILL HAND OUT TOPICS FOR PAPERS THIS WEEK OR NEXT.

    C.  LAB - Extension of lecture.  Will take various forms:  DEMO, TOURS, TRIPS. 

TAKE NOTES - LOOK FOR REDUNDANT ITEMS, BE SURE TO BE ABLE TO IDENTIFY IMPORTANT PLANT PRODUCTS IN TERMS OF STRUCTURE [VEGETATIVE OR FLORAL] AND CLASSIFICATION (= FAMILY, GENUS, SPECIES), AND ORIGIN - DEMO GOURD:  Lagenaria siceraria - CUCURBITACEAE - ORIGIN = PROBABLY AFRICA.

LAB PRACTICAL IS SERIES OF STATIONS WITH AN OBJECT AT EACH STATION, EXAMINE AND RESPOND TO QUESTION.  FIELD TRIPS REQUIRE PROPER DRESS.  DESCRIBE -  'AGGIE CUISINE'

 INTRODUCTORY NOTIONS:

Relationship between plants and people relates to fundamental energetic relationships of the BIOSPHERE

The planet:  Lithosphere ('crust of the earth' - mineral) - Atmosphere ('the air' -gas) - Hydrosphere (water)
  are abiotic and massive - these relate to the BIOSPHERE - which constitutes a very thin layer between the lithosphere and the atmosphere - it contains elements of other 'spheres', but is also UNIQUE:

     a.  rapid cyclic flux - turnover, cycles
     b.  complex
     c.  increasing (mass, complexity)
     d.  anti-entrophic (in a sense)

ENTROPY - EARTH IS UNIQUE IN THE SOLAR SYSTEM - WHY?  AT THE MULTICELLULAR LEVEL - HOW IS LIFE ORGANIZED? - PLANT [CELL WALL-CELLULOSE-GLUCOSE POLYMER-CHLOROPLAST].  WHAT IS UNIQUE ABOUT LIFE - ANTI-ENTROPHIC - TENDS TO INCREASE COMPLEXITY AND MASS.  HOW IS LIFE ANTI-ENTROPHIC? - INTEGRATED SYSTEM [BIOSPHERE] - RADIANT ENERGY CONVERTED TO CHEMICAL ENERGY THROUGH PHOTOSYNTHESIS:

WATER + LIGHT --- CHLOROPLAST [WHY ARE PLANTS GREEN = EM SPECTRUM - PIGMENTS] = O2+ENERGY [LIGHT REACTION] + CO2 [CALVIN CYCLE] = CARBON COMPOUNDS

6CO2 + 12H2O -----> C6H12O6(glucose) + 6O2 (detail)

CONSULT BOOK (FIG. 1-4) AND KNOW [AT LEVEL OF BOOK] - THESE REACTIONS (role of both light and dark reactions, NADP+ and ATP), KNOW WHY CARBON IS A LOGICAL CHEMICAL BASE FOR LIFE, AND KNOW THE STRUCTURAL RELATIONSHIPS BETWEEN THE MAJOR CLASSES OF ORGANIC COMPOUNDS - HYDROCARBONS, ALCOHOLS, ALDEHYDES, KETONES, ACIDS, AND AMINES.

5.  THUS, ANIMALS  ARE PARASITIC ON THE ONLY LIFE FORM THAT CAN TRANSFORM RADIENT TO CHEMICAL ENERGY - PLANTS.

"ALL FLESH IS GRASS" - next notion:

[ethnoflora as subset of world's flora]

'PLANTS AND PEOPLE' DEALS WITH THE RELATIONSHIPS BETWEEN ONE ANIMAL SPECIES [Homo sapiens] AND THAT PORTION OF THE PLANT WORLD WITH WHICH IT INTERACTS - THE ETHNOFLORA - which is - in essence - an array of species adapted to habitats created by humans.

TWO GENERAL AREAS OF INTEREST: 1) TECHNICAL VS. FOOD AND 2) ORIGINS

Extra time?:  1.  FLOWERING PLANTS:  ALL PLANTS CLASSIFIED INTO 15-20 MAJOR UNITS OR DIVISIONS [=PHYLA OF ANIMALS].  CAN ALSO BE BROKEN DOWN INTO:

NON-VASCULAR [ALGAE, MOSSES]

VASCULAR:  NON-SEED [FERNS AND ALLIED] AND SEED [GYMNOSPERMS AND ANGIOSPERMS] - DIVISIONAL NAME FOR THE FLOWERING PLANTS OR ANGIOSPERMS IS THE MAGNOLIOPHYTA [CA. 220,000 SPECIES DISTRIBUTED WORLDWIDE IN ESSENTIALLY EVERY HABITAT].  THIS GROUP IS CLASSIFIED INTO TWO CLASSES:  LILIOPSIDA [MONOCOTS] AND MAGNOLIOPSIDA [DICOTS].  BASIC WORKING UNITS WITHIN THE CLASSES ARE SUBCLASSES [GROUPS OF ORDERS] AND FAMILIES (OVERVIEW).



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