Question

Match List I with List II 

Choose the correct answer from the options given below: 
 

• A. A-II, B-III, C-IV, D-I
• B. A-II, B-III, C-I, D-IV
• C. A-II, B-I, C-III, D-IV
• D. A-IV, B-III, C-I, D-II

Hint:

Focus on mimicry: Phalaris mimics Wheat, and Argemone mimics Mustard seeds.
These pairings are critical for seed certification standards in India.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
The question asks to match specific "objectionable weeds" with the crops they typically contaminate.
Objectionable weeds are those whose seeds are physically similar to the crop seeds and are difficult to separate by conventional cleaning methods.

Step 2: Detailed Explanation:

• Argemone mexicana (A-II): Commonly known as prickly poppy, its seeds are very similar in size, shape, and color to Mustard (Rapeseed) seeds. Its presence is dangerous as the seeds are toxic.

• Johnson grass (B-III): Sorghum halepense is an objectionable weed in Sorghum cultivation because its seeds can contaminate the grain lot and the plant itself is a perennial competitor.

• Cichorium intybus (C-I): Known as Chicory or Kasni, it is a major objectionable weed in forage crops like Lucerne (Alfalfa) and Berseem. The seeds are difficult to separate from small forage seeds.

• Phalaris minor (D-IV): Known as Canary grass or Gulli-danda, it is a mimicry weed in Wheat. It looks exactly like wheat during the vegetative stage, and its seeds are often found as contaminants in wheat seed lots.
Final Answer:
The correct matching is A-II, B-III, C-I, and D-IV.
This matches option (B).