Question

Match List I with List II 

Choose the correct answer from the options given below: 
 

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

Hint:

Rice = $2x$ (Diploid).
Durum Wheat = $4x$ (Tetraploid).
Bread Wheat = $6x$ (Hexaploid).
Seedless crops (like Banana or Watermelon) are often $3x$ (Triploid).

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
Ploidy refers to the number of sets of chromosomes in a cell. This question asks to match common crops with their characteristic ploidy levels.

Step 2: Detailed Explanation:

• Rice (A-III): Most cultivated rice (Oryza sativa) is Diploid ($2n = 2x = 24$). While some wild relatives can be polyploid, the primary crop is diploid.

• Bread wheat (B-IV): Triticum aestivum is an allopolyploid. It is a Hexaploid ($2n = 6x = 42$) containing three distinct genomes: A, B, and D.

• Durum wheat (C-I): Triticum durum, used for making pasta and semolina, is a Tetraploid ($2n = 4x = 28$) containing two genomes: A and B.

• Seedless banana (D-II): Commercial seedless bananas (Cavendish group) are usually Triploid ($2n = 3x = 33$). Their triploidy results in sterility and the absence of seeds, which is desirable for consumption.
Final Answer:
The matching results in A-III, B-IV, C-I, and D-II.
This corresponds to option (B).