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BIOL 1902 (382)
Lecture

wk 7.doc

5 Pages
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Department
Biology
Course Code
BIOL 1902
Professor
Michael Runtz

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Description
WEEK 7 SOME TERMS AND EXAMPLES LIVE PLANTS AS FOODALL PARTS OF PLANTS ARE FOOD FOR ANIMALSPHYSICAL PROBLEMS TO OVERCOME1 TOUGH TISSUES DUE TO STRUCTURAL COMPONENTSADAPTATIONS TO BREAK OFF AND THEN BREAK UP1 SNAILS AND SLUGS HAVE RADULA2 INSECTS CATERPILLARS GRASSHOPPERS HAVE MANDIBLES THAT SLICE TEAR CRUSH3 MAMMALSMODIFIED TEETHA INCISORS TO CUT OFF PIECES OF PLANTS BEAVERS AND OTHER RODENTSCONSTANTLY GROW AND SELFSHARPEN BY1RUBBING AGAINST EACH OTHER 2 STRUCTURE DENTINE AND ENAMELWEAR DIFFERENTIALLYB CHEEK TEETHMOLARS PREMOLARS GRIND AND CRUSHTHEIR SURFACES WEAR DIFFERENTIALLY DUE TO STRUCTURE MUSCLESHUGE MASSETERS TO POWER GRINDING 4 BIRDSSPRUCE GROUSE EATS SPRUCE NEEDLESREALLY TOUGH GROUND IN GIZZARDMUSCULAR STOMACH COMPARTMENT WITH TOUGH INNER WALLBIRDS ADD GRIT SMALL STONES TO GIZZARD BY EATING THEMANALOGOUS STRUCTURESSAME FUNCTION BUT A DIFFERENT ORIGINGIZZARD RADULA MANDIBLES CHEEK TEETH ALL GRIND AND BREAK UP PLANT MATERIAL BUT ALL ARE DIFFERENT PARTS OF THE BODYANALOGOUS STRUCTURES PHYSICAL INGESTION IS FOLLOWED BY INTERNAL DIGESTION WITH ENZYMES DIGESTIONBREAKDOWN OF THE STRUCTURAL ELEMENTS LIKE CELLULOSE INTO SMALLER ABSORBABLE STRUCTURESSLUGSSNAILS PRODUCE DIGESTIVE ENZYMESMOST ANIMALS CANNOTSOLUTIONS1 CATERPILLARS EAT LOTS WASTE LOTS3 TO 4 TIMES THEIR BODY WEIGHT EACH DAY2MAMMALSLARGE HERBIVORESDEER MOOSE HAVE RUMENSPECIAL STOMACH COMPARTMENT FULL OF BACTERIA AND MICROBES THAT DIGEST PLANTS1
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