Question

Match List-I with List-II:
\includegraphics[width=0.6\linewidth]{28.png Choose the correct answer from the options given below:

• (A) - (IV), (B) - (III), (C) - (I), (D) - (II)
• (A) - (IV), (B) - (III), (C) - (II), (D) - (I)
• (A) - (III), (B) - (IV), (C) - (II), (D) - (I)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Hint:

Remember:
Red rot = Sugarcane (Colletotrichum falcatum).
Karnal bunt = Wheat (Tilletia indica, fishy smell).
White rust = Mustard (Albugo candida).
Yellow Mosaic Virus (YMV) = Soybean Pulses (Whitefly vector).

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Crop diseases caused by fungi, bacteria, viruses, or phytoplasmas are major constraints on global agricultural productivity.
Each plant pathogen typically has a specific host range and produces characteristic symptoms in its host crop.

Step 2: Detailed Explanation:
Let us correlate each crop disease with its corresponding host plant:
1. Red rot (A):
Red rot of sugarcane is caused by the fungus Colletotrichum falcatum.
It causes red discoloration and white patches within the vascular tissues of the sugarcane stalk, along with a characteristic sour odor.
Thus, (A) matches with (III).
2. Karnal bunt (B):
Karnal bunt of wheat is a fungal disease caused by Tilletia indica.
It primarily infects developing grains, replacing them with a black, powdery mass of teliospores that release a characteristic fishy odor due to trimethylamine production.
Thus, (B) matches with (IV).
3. White rust (C):
White rust of crucifers is caused by the oomycete Albugo candida.
It affects rapeseed and mustard crops, producing white, shiny pustules containing zoosporangia on the leaves, stems, and floral parts.
Thus, (C) matches with (II).
4. YMV (Yellow Mosaic Virus) (D):
Yellow Mosaic Virus is a major viral disease affecting pulse crops, including soybean, mungbean, and urdbean.
It causes yellow mosaic patterning on leaves and is transmitted primarily by the whitefly vector (Bemisia tabaci).
Thus, (D) matches with (I).

Step 3: Final Answer:
The correct matching sequence is (A)-(III), (B)-(IV), (C)-(II), and (D)-(I). This corresponds to option (C).