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20 terms

Plant Nutrition/Water and Mineral Absorption

Slide set 17 and 18
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Autotrophic Organisms
Derive nutrition from inorganic substances in earths crust
Heterotrophic Organisms
Derive nutrients from other living organisms
Macroelements
Required in relatively large quantity by plants
Carbon, Hydrogen, Oxygen, Phosphorus, Potassium, Nitrogen, Sulfur, Calcium, Iron, and Magnesium
Macroelements
Microelements
Required in relatively small quantity by plants
Cation
molecule with positive charge
Anion
molecule with negative charge
Exchangeable Form
Ion weakly associated with soil particle having the opposite charge.
Hydroponic Culture
plants grown in liquid culture
Aeroponic Culture
plants grown in air
Solid Media
Plants grown in sand, vermiculite, or perlite
Chlorosis
Nitrogen deficiency
Necrosis
Death of tissue
Wilting
Insufficent water available to maintain turgor pressure
Plasmolysis
Plasma membrane pulls away from cell wall
Turgid cells
sufficient water to maintain turgor pressure
Solute Potential
number of solutes disolved in water, decreases water potential
Pressure potential
Turgor pressure, increases water potential
Biotic pathway
Transport through cells
Abiotic pathway
Transport between cells