GATE BT 2025 | Question: 38

Question

​​​​Correctly match the herbicide with its mode of development of resistance in plants.
\begin{array}{|l|l|}
\hline \textbf{Herbicide } & \textbf{Mode of development of resistance} \\
\hline \text{P. Imidazolinones} & 1. \text{Transformation of bacterial nitrilase gene} \\
\hline \text{Q. Bromoxynil} & 2. \text{Transformation of resistant version} \\ & \text{of acetolactate synthetase} \\ \hline \text{R. Glufosinate} & 3. \text{Transformation of} \textit{ tfdA } \\ & \text{gene from} \text{ Alcaligenes},  \\ & \text{which encodes a dioxygenase} \\ \hline & 4. \text{Transformation of bar gene from} \text{Streptomyces hygroscopicus } \\ & \text{which encodes phosphinothricin  acetyltransferase} \\ \hline \end{array} 

• A. $\mathrm{P}-2 ; \mathrm{Q}-1 ; \mathrm{R}-4$
• B. $\mathrm{P}-2 ; \mathrm{Q}-1 ; \mathrm{R}-3$
• C. $\mathrm{P}-1 ; \mathrm{Q}-2 ; \mathrm{R}-3$
• D. $\mathrm{P}-4 ; \mathrm{Q}-1 ; \mathrm{R}-3$