UGC NET Questions (Paper – 1)

Statements A, B and D are correct and together summarise the relationship between carrying capacity, environmental limits and sustainable development. Carrying capacity describes the maximum sustainable load on an environment, and exceeding it can cause depletion and degradation. Sustainable development tries to align human activities with these ecological limits. Statement C is incorrect because technological innovations can increase or sometimes decrease effective carrying capacity by changing resource use efficiency and environmental impact. Hence, the correct combination is A, B and D only.

Option A:
Option A is incorrect because it lists only A and B, leaving out D. Although A and B accurately define carrying capacity and consequences of overshooting it, D is also correct in linking sustainability goals to staying within ecological limits. Excluding D makes the set incomplete.

Option B:
Option B is incorrect because it combines B, C and D and treats C as correct. C is wrong because technology can alter carrying capacity, for example through improved agricultural productivity or more efficient energy use. Including a false statement makes this combination unacceptable.

Option C:
Option C is incorrect because it asserts that all four statements A, B, C and D are correct. While A, B and D are correct, C contradicts the dynamic understanding of carrying capacity influenced by technological and social changes. The presence of an incorrect statement invalidates the entire set.

Option D:
Option D is correct because it identifies the three statements that align with ecological and sustainability concepts and excludes the one that is clearly false. It recognises both the definitional and policy dimensions of carrying capacity and reflects the essence of the development–environment relationship in the unit.

Statement D is wrong because carrying capacity is highly relevant to debates on population and sustainable development, highlighting ecological limits. Statements A, B and C are correct: they define carrying capacity, show its dependence on consumption and technology and explain consequences of overshoot. Thus, the combination that identifies D alone as wrong is correct.

Option A:
Option A is incorrect because it marks A as a wrong statement, but A is a correct definition of carrying capacity (maximum population without long-term degradation). Misclassifying a true definition makes this option invalid.

Option B:
Option B is incorrect because it groups A with D as wrong, even though A is correct. Including a correct statement among the wrong ones makes the combination unacceptable.

Option C:
Option C is incorrect since it marks both C and D as wrong. C is actually correct in noting that exceeding carrying capacity leads to depletion and stress, so this option incorrectly labels a true statement as wrong.

Option D:
Option D is correct because it singles out D as the only incorrect statement and implicitly acknowledges A, B and C as true. It aligns with the conceptual link between carrying capacity, population and sustainability.