Question:
Which one of the following statements can best explain the term critical
concentration of an essential element?
a. essential element concentration below which plant growth is
retarded.
b. essential element concentration below which plant growth becomes
stunted.
c. essential element concentration above which plant remains in the
vegetative phase.
d. none of the above
Solution:
Option (a) essential element concentration below which plant growth is
retarded. is the answer.