Q. Most fertile and productive soils in the world have developed under grassland. What could be the reason for this?
1. The rainfall in grasslands is inadequate and hence excessive leaching of minerals is blocked
2. The humus and partially decomposed organic materials expand its capability to retain water
Select the correct statement(s) from the codes given below:
Answer:
Both 1 & 2
Notes: The correct answer is "Both 1 & 2." Grasslands, such as the North American prairies and Eurasian steppes, have fertile soils (like Mollisols) due to limited rainfall, which reduces leaching of nutrients. Additionally, the accumulation of organic matter from grass roots enhances soil structure and water retention. This combination fosters high agricultural productivity, making grassland soils among the most fertile globally.