BIOL 2304 Quiz: Quiz 10 Guidelines_2016

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22 Feb 2017
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Quiz 10 questions will be based on material from lecture 20, lecture 21, lecture. Make yourself familiar with the following questions and subjects: mechanisms of symplastic and apoplastic phloem loading and unloading. Active transport of sucrose in the apoplastic pathway via a sucrose/h+ symporter: cohesion tension hypothesis of long distance water transport in the xylem. This water potential gradient is the driving force for the movement of water: uptake of water by roots; permeable root zones, the role of the casparian strip in the endodermis. Iron and manganese: chlorophyll synthesis: typical nutrient deficiency symptoms and differences of these symptoms between mobile and non-mobile elements. One common symptom is chlorosis: leaves lack chlorophyll, tend to be yellowish, and are often brittle and papery, deficiencies of either nitrogen or phosphorus cause the accumulation of anthocyanin pigments. Reduced concentrations of chlorophyll; leaves are more light sensitive (chlorosis) Anthocyanins protect leaves against exposure to high light and oxidative damage.

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