Question

Identify the incorrect pair.

• A. Die-back -- Citrus -- Copper
• B. Whip tail -- Cauliflower -- Zinc
• C. Heart-rot -- Beta -- Boron
• D. Mouse ear -- Pecan -- Nickel

Hint:

Whiptail \(\rightarrow\) Zinc deficiency.
Heart rot \(\rightarrow\) Boron deficiency.
Mouse ear \(\rightarrow\) Nickel deficiency.

Answer 1

The Correct Option is A

Concept: Mineral deficiencies produce characteristic symptoms in plants.

Step 1: Check each pair.
Whiptail in cauliflower \(\rightarrow\) Zinc deficiency \(\checkmark\) Heart rot in beet \(\rightarrow\) Boron deficiency \(\checkmark\) Mouse ear in pecan \(\rightarrow\) Nickel deficiency \(\checkmark\)

Step 2: Analyze Die-back.
Die-back of citrus is associated mainly with zinc deficiency and not copper. Therefore pair (A) is incorrect. \[ \boxed{\text{Option (A)}} \]