Author Question: Hyperaccumulators are plants that: A) take up extremely high amounts of certain metals without ... (Read 78 times)

crobinson2013 · **on:** Jul 22, 2018

Hyperaccumulators are plants that:

A) take up extremely high amounts of certain metals without being harmed.
B) are extremely sensitive to the toxic effect of certain heavy metals and therefore act as an early warning system to detect contamination.
C) accumulate dense root mats just above the layer of polluted soil.
D) can survive on metal-contaminated soil by growing without taking in too much of the metal in question.
E) none of the above

Question 2

Maintaining soil reaction at pH 7.0 is likely to virtually eliminate any significant ________ by heavy metals applied to soils with sewage sludge.

A) plant uptake B) leaching C) adsorption D) precipitation E) both A and B