8-leavesoutl - c. leaf scar II. Epidermis A. stomata guard...

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AG V03: Plant Biology - Leaves (Ch 8) © copyright 2011 Marta D. de Jesus I. Leaves in general A. functions 1. 2. transpiration 3. B. structure 1. blade= lamina 2. connection a. in dicots: petiole sessile b. in monocots: sheath 3. stipules 4. tissue layers a. epidermis b. mesophyll 1) palisade mesophyll 2) spongy mesophyll c. vein 1) xylem 2) phloem 3) bundle sheath C. shapes 1. venation a. dicots: reticulate 1) palmate 2) pinnate b. monocots: parallel c. other: dichotomous 2. overall shape a. simple
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b. compound 1) pinnate leaflets rachis petiolule 2) palmate c. monocot leaves D. wilting E. abscission 1. deciduous 2. abscission zone a. protective layer suberized b. separation layer pectins of the middle lamella
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Unformatted text preview: c. leaf scar II. Epidermis A. stomata guard cells a. expand b. controlled by 1) 2) 3) abscisic acid 4) c. shapes d. prevent 1) trichomes 2) crypt B. trichomes 1. 2. 3. 4. . C. crystals III. Leaf specializations A. shade vs. sun B. Kranz anatomy bundle sheath cells 1. C 4 2. Mesophyll cells malate 3. Bundle sheath cells C. adult vs. juvenile D. above and below water E. others: many modifications 1. scale leaves 2. tendrils 3. spines prickles 4. storage leaves a. for water b. for carbohydrate 5. window leaves 6. flower pot leaves 7. insect-trapping leaves a) sticky b) traps c) grab 8. reproductive 9. floral bracts...
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8-leavesoutl - c. leaf scar II. Epidermis A. stomata guard...

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