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Roots, Stems, Leaves, Tissues

Roots, Stems, Leaves, Tissues - BSC 2011L 3 vegetative...

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BSC 2011L
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3 vegetative organs that don’t have to do with reproduction: Root – anchor the plant, and absorb water and minerals Stem – supports leaves Leaves – carry on photosynthesis 3 major tissues of vegetative organs: Dermal tissue Outer protective coating of organ Ground tissues Interior of plant organ Vascular tissue Xylem (transports water) and phloem (transports sugars) Transports, supports
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3 cell types according to cell wall structure Parenchyma Large vacuoles Important roles: Photosynthesis in leaves Storage of proteins in fruits Storage of starch in roots Collenchyma Generally elongated Provide support to leaf petioles, nonwoody stems, growing organs Sclerenchyma Thickened cell walls for support Undergo programmed cell death often and offer support then (in wood and bark)
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Primary Growth Increases length of plant Secondary Growth Increases girth of plant
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Located at terminal end of stem, branches, root tip Continuous growth
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