Correct option is B
- Statement 1: Correct
Croplands are man-made ecosystems created and maintained by humans for agricultural production. Unlike natural ecosystems, they are artificially managed to support specific plant species for food, fiber, or other resources.
- Statement 2: Correct
Croplands generally have low genetic diversity because they are dominated by monoculture, where only one type of crop is cultivated extensively. This practice reduces biodiversity and makes cropland ecosystems more vulnerable to pests, diseases, and environmental changes.
Additional Information
- Cropland Ecosystem Characteristics:
- Highly controlled environment: Requires human intervention for irrigation, fertilization, pest control, and harvesting.
- Low species diversity: Monoculture practices often lead to reduced genetic and species diversity.
- Nutrient management: Nutrients need to be replenished through fertilizers, as the soil is heavily exploited.
- Consequences of Low Genetic Diversity:
- Increased susceptibility to pests and diseases.
- Reduced resilience to climatic changes.
