10-PlantTransportS109b-1

10-PlantTransportS109b-1 - Transport in Plants Lecture...

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Transport in Plants Lecture 10/Chapter 38
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Nutrient Uptake in Plants What do plants need to grow? CO 2 gas is exchanged along with O 2 , and H 2 O in leaves Photosynthesis produces sugars from CO 2 and H 2 O Must be transported to all living parts of plant Roots take up minerals and H 2 O Must be transported to all living parts of
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Anatomy of plant transport: roots Root hairs: Purpose: Function: Minerals actively transported Once in cells, water and minerals make their way to transport vessels
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Anatomy of plant transport: Xylem Xylem : Vessels : Tracheids : hollow cylindrical cells, tapered at ends, overlapping to form continuous tubes Figure 36.12
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Anatomy of plant transport: Phloem Phloem : Sieve tube cells : Mechanisms of transport differs between xylem and ploem Figure 36.13
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Anatomy of plant transport: Stomata Figure 38.12 Leaf gas exchange: Stomata : Water content in guard cells controls opening/closing of stomata Can be reversibly filled with water causing a change in shape of the cells
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Water transport in plants Figure 38.2
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10-PlantTransportS109b-1 - Transport in Plants Lecture...

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