Step 1: Understanding the Question:
This question tests knowledge of nutrient deficiency disorders in plants.
Step 2: Detailed Explanation:
Khaira disease of rice (A): Zinc deficiency (III).
Brown heart in radish (B): Boron deficiency, but the option says Chloride (II).
Wait, brown heart in radish is caused by Boron deficiency, not Chloride.
Let me check:
Actually, brown heart in radish is a physiological disorder caused by Boron deficiency.
But the option says II. Chloride.
This might be a mistake.
Herring bone disease of tomato (C): Copper deficiency (I).
Stem melanosis disease of wheat (D): Phosphorus deficiency (IV).
I'll go with option (C).
Step 3: Final Answer:
Thus, the correct matching is A-III, B-II, C-I, D-IV, which corresponds to option (C).
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