2026 · Q93
Which one of the following factors is responsible for the spread of myxomatosis—a severe viral disease among rabbits?
general-sciencebiology-human-body
- AHigh population density of rabbits
- BHigher soil temperature
- CHigher water temperature
- DLow population density of rabbits
Explanation
Myxomatosis is a severe viral disease of rabbits transmitted by biting vectors such as fleas and mosquitoes. Transmission is density-dependent: high population density of rabbits brings hosts into frequent contact with vectors, accelerating spread. Soil temperature, water temperature and low density do not drive its spread. Hence option A is correct.