Water & Transport Mastery Quiz — THC Living Plant Atlas

1Why are root hairs important?

AThey produce pollenBThey replace the xylemCThey increase contact between the root and the surrounding solution or mediaDThey prevent all water loss

2Which statement best represents water and nutrient uptake as a whole-plant process?

AIt reflects root contact, available water and ions, membrane transport, and whole-plant demandBIt depends on one root-zone number onlyCIt occurs only in leavesDIt is unrelated to transpiration

3What does xylem primarily transport?

APollen from flowers to rootsBOnly sugars from leaves to sinksCAir through the stemDWater and dissolved mineral ions from roots toward shoots

4Why are stomata important to both photosynthesis and transpiration?

AThey are roots on the leaf surfaceBThey transport pollenCThey regulate gas exchange, allowing carbon dioxide entry while water vapor can exitDThey are seed storage tissues

5What does VPD help describe?

AExact nutrient concentration in rootsBSeed viabilityCThe atmospheric vapor-pressure difference related to plant water loss and transpiration demandDPollen genotype

6Why is a whole-system view useful when interpreting plant response?

ARoot moisture, oxygen, pH, EC, temperature, and atmospheric demand can interactBOnly one measurement ever mattersCRoots and leaves function independentlyDEnvironment has no effect on transport