UPSC CAPF (AC) 2026 Paper I · Question 93

Question 93 of the UPSC CAPF (AC) 2026 Paper I (19 July 2026). Try it first, then open the answer and explanation.

1. CAPF 2026 · P-I · Q93 · General Science · Biology

   Which one of the following factors is responsible for the spread of myxomatosis - a severe viral disease among rabbits?

   1. Higher water temperature
   2. Higher soil temperature
   3. High population density of rabbits
   4. Low population density of rabbits

   शशकों (rabbits) में, एक गंभीर विषाणुज रोग मायक्सोमैटोसिस (myxomatosis) के फैलने के लिए निम्नलिखित में से कौन-सा कारक उत्तरदायी है?

   1. उच्चतर जल तापमान
   2. उच्चतर मृदा तापमान
   3. शशकों का उच्च जीवसंख्या घनत्व
   4. शशकों का निम्न जीवसंख्या घनत्व
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   Answer: (3) High population density of rabbits

   उत्तर: (3) शशकों का उच्च जीवसंख्या घनत्व

   Myxomatosis spreads by direct contact and through biting insects such as fleas and mosquitoes, so it passes far more easily among crowded rabbits; disease is a classic density-dependent factor whose impact rises with population density. Water or soil temperature is not the driver, and a low density would slow its spread.

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