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33-plantstrucoutl

33-plantstrucoutl - sieve tube members companion cells...

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Biology 3 Lecture: Plant Structure (SBM9: Ch 33) © 2011 copyright Marta de Jesus I. General terms A. growing season 1. annual 2. biennial 3. perennial a. deciduous b. evergreen B. overall form 1. herb 2. shrub 3. bush 4. tree II. Parts of a vascular plant A. organs 1. Shoot system a. stem 1) usual functions 2) parts (i) nodes axil axillary buds (ii) internodes (iii) terminal bud b. leaves 1) usual functions 2) parts (i) blade (ii) petiole 3) simple vs. compound c. reproductive structures (talk about later) 2. Root system a. usual functions
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b. taproot vs. fibrous root c. branch/lateral root d. root hairs 1. 1 = primary growth ˚ a. stem: 3 tissues 1) ground tissue (i) 2 regions pith cortex (ii) cells parenchyma collenchyma sclerenchyma 2) vascular tissue (i) xylem tracheids vessel elements others (ii) phloem
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Unformatted text preview: sieve tube members companion cells others stele 3) dermal tissue (i) cells epidermal cells guard cells trichomes (ii) cuticle (iii) periderm cork cells b. root: 3 tissues 1) ground tissue pith cortex unique layer: endodermis 2) vascular tissue (i) pericycle (ii) xylem (iii) phloem 3) dermal tissue c. leaf: 3 tissues 1) vascular tissue bundle sheath 2) ground tissue mesophyll (i) palisade mesophyll (ii) spongy mesophyll 3) dermal tissue 2. 2 = secondary growth ˚ stem & roots accumulate: III. Growth A. 1 growth ˚ 1. shoot apical meristem (SAM) 2. root apical meristem (RAM) B. 2 growth ˚ lateral meristems vascular cambium cork cambium *Save most of the discussion of plant growth and morphogenesis (p722-4) for next semester...
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