Indicator plant of copper is

A. Maize

B. Wheat

C. Sorghum

D. Potato

Answer: Option B

Solution(By Examveda Team)

The crops are specific for the occurrence of symptoms of a particular deficient nutrient element exhibiting characteristic symptoms. Such crops are called Indicator crops for deficiency of that particular element.
Citrus fruits and cereals like wheat is the indicator of the copper element. A general wilting of the whole plant occurs at early tillering.