Grade 9 Biological Diversity Unit Practice Exam 2025 – Your Comprehensive Guide to Exam Success!

Monoculture agriculture involves the cultivation of a single crop species over a large area for multiple seasons. This practice leads to a significant reduction in habitat diversity because it replaces various ecosystems with a uniform landscape dominated by one type of crop. Such a lack of variety can disrupt local ecosystems, eliminating habitats that support a range of plants and animals.

Additionally, monoculture can deplete soil nutrients. Growing only one type of crop often means that the same nutrients are drawn from the soil repeatedly without adequate replenishment or crop rotation, which can lead to soil degradation. In contrast to diverse agricultural practices that may restore nutrients and promote a healthier soil ecosystem, monoculture puts continuous stress on the soil.

The combination of reduced habitat diversity and nutrient depletion negatively impacts the ecological dynamics necessary for supporting diverse species interactions, making the consequences of monoculture agriculture detrimental to overall biodiversity.