Lecture 16, Ch. 35

Lecture 16, Ch. 35 - Lecture # 16 Date _ Chapter #35~ Plant...

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Lecture # 16 Date _____ Chapter #35~ Plant Structure and Growth
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Angiosperm structure Three basic organs : Roots (root system) fibrous: mat of thin roots taproot: one large, vertical root Stems (shoot system) nodes: leave attachment internodes: stem segments axillary bud: dormant, vegetative potential terminal bud: apex of young shoot apical dominance: inhibits axillary buds Leaves (shoot system) blade petiole
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Plant Organ Systems Dermal (epidermis): single layer of cells for protection cuticle Vascular (material transport) xylem: water and dissolved minerals roots to shoots tracheids & vessel elements: xylem elongated cells dead at maturity phloem: food from leaves to roots and fruits sieve-tube members: phloem tubes alive at maturity capped by sieve plates; companion cells (nonconducting) connected by plasmodesmata Ground (photosynthesis, storage, support): pith and cortex
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Plant Tissue Cell Types Parenchyma
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Lecture 16, Ch. 35 - Lecture # 16 Date _ Chapter #35~ Plant...

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