Question

What is the effect of the destruction of wildlife?
A. Flood
B. Soil erosion
C. Green-house effect
D. Gene for disease resistance cannot be obtained

Answer 1

Hint: Wildlife represents the species which are not cultivated or domesticated. They are reservoirs of wild genes with the extensive natural power of disease resistance.

Complete answer: The uncultivated or undomesticated animals are symbolic of wildlife. They have a large gene-pool. There is a narrow gene pool for cultivated plants and domesticated animals since man has selected these species over a span of thousands of years. In addition, in protected areas, cultivated plants and domesticated animals are grown.
On the other hand, uncultivated plants and non-domesticated animals grow in combination with disease-causing organisms in natural environments and rely on naturally evolved defense mechanisms. These species have developed resistance to diseases, mechanisms and their wild genes are rich sources of disease resistance.

So, the correct option is D. Gene for disease resistance cannot be obtained

Note: The loss of biodiversity and wildlife in an ecosystem would have a dramatic impact. There will be no substantial impact such as soil erosion, flooding, etc. These are caused by other factors, such as deforestation and greenhouse gases.