UGC NET Questions (Paper – 1)

Statements A, B and D are correct and together emphasise the importance of diversity in agricultural systems. Agro-biodiversity spans genes, species and ecosystems related to agriculture, conserving traditional varieties can improve resilience and farmers’ on-farm practices help maintain this diversity. Statement C is incorrect because long-term sustainability often suffers under extensive monoculture, which can increase vulnerability and degrade ecosystems. Therefore, the combination A, B and D only is the correct answer.

Option A:
Option A is incorrect because it omits D, which rightly highlights the role of farmers in maintaining agro-biodiversity through their management and selection practices. Excluding this statement gives an incomplete view of conservation strategies.

Option B:
Option B is incorrect as it includes only B and D and leaves out A, which defines agro-biodiversity and is essential for understanding the concept. Without A, the answer loses clarity about the scope of agro-biodiversity.

Option C:
Option C is correct because it gathers all the true statements A, B and D and excludes the misleading assertion in C about monoculture always aiding sustainability. It aligns with agro-ecological thinking that values diversity for long-term resilience and productivity.

Option D:
Option D is incorrect since it treats all four statements as correct, thereby endorsing C. This would imply that monoculture invariably improves sustainability, which contradicts evidence from many farming systems.