Chap 28 & 29.pdf - Function of Roots Organ that anchors a vascular plant in the soil ABSORBS MINERALS WATER STORES CARBS Stem Organ where leaves are

Chap 28 & 29.pdf - Function of Roots Organ that anchors...

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Function of: Roots : Organ that anchors a vascular plant in the soil ABSORBS MINERALS & WATER, STORES CARBS Stem : Organ where leaves are attached, ELONGATE AND ORIENT THE SHOOT BY MINIMIZING PHOTOSYNTHESIS BY THE LEAVES, ELEVATE REPROD. STRUCTURES Leaves : MAIN PHOTOSYNTHETIC ORGAN; intercepts light & leaves exchange gas in atmos, dissipate heat, and defend Root hairs : near the tips of roots, thin, finger-like root epidermal cells, EMERGE & INCREASE surface area of the root Taproot: (tall erect plants large shoot masses) Penetrates the soil deeply & helps prevent the plant from toppling Lateral roots : role of absorption restricted; branch off from taproot Phloem : transports sugars, the products of photosynthesis, from being made in the leaves to where needed Xylem : Conducts water and dissolved minerals upward from the roots in the shoots Ground : Neither dermal or vascular tissue (internal to vas. PITH ; external to vas. CORTEX) Vascular: Facilitate the transport of materials through the plant to provide mechanical support
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  • Fall '16
  • Szelong
  • Photosynthesis, root epidermal cells, main photosynthetic organ

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