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Definition
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Definition
| densely packed columnar-shaped elongated cells full of chloroplasts |
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Definition
| xylem, phloem, bundle sheath with associated parenchyma |
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Definition
| loosely packed cells with large air spaces; allows movement and exchange of gases (o2, C02, h20); also contain chloroplasts |
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Definition
| Contain guard cells that regulate stomata |
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Definition
| organelles that contain diff pigments (carotinoind, anthocyanin), resulting in fall colors |
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Definition
| Pigment that's responsible for yellow/orange in leaves; chlorplasts decline production in late summer, chromoplasts continue caritinoind |
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Definition
| Pigment that results in leaf red color; warmth stimulates production, cool hinders translocation (moving out)=red color |
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| Transpiration (Evapotranspiration) |
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Definition
| H20 movement through plant from root to leaf |
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Term
| Rate of transpiration depends on? |
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Definition
-light
-temp
-humidity
-wind
-soil water availability
-plant type |
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Definition
| Water pressure inside plant cells; insufficient turgor=plant wilts (guard cells close stomata so plant can satisfy evaporation needs) |
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| Turgor in root cells at night/cloudy days push water up into stem; has limitations |
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Term
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Definition
1) cohesion - water forms H bond b/c it's polar; in small tube this bond is very strong
2) adhesion - Water is attracted to xylem walls; helps fight against gravity
3) tension - As water evaporates, moving molecule creates tension, and 'pulls' molecule chain |
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