UGC NET Questions (Paper – 1)

The ecological footprint combines the area needed to provide the resources a population consumes and to absorb its wastes and emissions, and then compares this demand with available biocapacity.

Option A:
Incorrect, because territorial size alone says nothing about how intensively resources are used or wastes are generated.

Option B:
Correct, as this definition captures both resource use and waste absorption in terms of biologically productive area.

Option C:
Incorrect, since population size without information on consumption patterns cannot indicate environmental pressure.

Option D:
Incorrect, because species richness is a biodiversity metric, not a direct measure of human demand on ecosystems.

The ecological footprint is an indicator that translates human consumption of resources and generation of waste into an equivalent area of biologically productive land and water. It reflects how much of the Earth’s regenerative capacity is used to support a given lifestyle, city or nation. By comparing ecological footprint with available biocapacity, we can judge whether development is ecologically sustainable or exceeds planetary limits. Thus, the primary measure is the required productive area for resource use and waste assimilation, as stated in option A.

Option A:
Option A correctly captures both resource consumption and waste absorption in terms of biologically productive area. It links human activity to ecological limits, which is why the concept is widely used in sustainability studies.

Option B:
Option B is incorrect because it refers simply to land area, not to biologically productive land and water needed to sustain specific consumption patterns. A large country could still have a small ecological footprint if its population and consumption levels are low.

Option C:
Option C is incorrect since the number of species present refers to species richness or biodiversity, not ecological footprint. While biodiversity is important, it is a different indicator.

Option D:
Option D is incorrect as it narrows the focus to greenhouse gases from industry only. Ecological footprint includes resource extraction, energy use, food consumption and waste from all sectors, not just industrial emissions.

Statements A, B and C are correct: A defines carbon footprint, B defines ecological footprint and C notes their use as sustainability indicators. Statement D is incorrect because, although related, the two concepts are not identical; carbon footprint focuses on emissions whereas ecological footprint covers broader resource and land-use aspects. Option D includes D and omits B, so it is not the correct answer. The correct combination must include A, B and C only.

Option A:
Option A is correct because it includes the three true statements and excludes D. It distinguishes between the narrower emissions-focused carbon footprint and the broader land-demand-focused ecological footprint, while acknowledging their use in assessment. This aligns with the conceptual treatment of the indicators.

Option B:
Option B is incorrect as it leaves out B, which is essential for explaining ecological footprint, and thereby gives an incomplete picture.

Option C:
Option C is incorrect since it includes D, which wrongly treats the two indicators as identical and interchangeable. This ignores important conceptual differences between them.

Option D:
Option D is incorrect because it accepts D while omitting B. It fails to provide the proper definition of ecological footprint and conflates the two measures, making the combination unacceptable.

The ecological footprint measures how much biologically productive land and water area is needed to supply a population’s resources and absorb its wastes. High consumption of meat, energy-intensive goods and frequent air travel significantly increases this demand. Meat production requires large amounts of land, water and feed, while energy-intensive products and aviation burn substantial fossil fuels. Thus, a rapid rise in such consumption patterns increases the ecological footprint more than efficiency improvements or afforestation.

Option A:
Option A would generally reduce ecological footprint because mass public transport uses energy more efficiently per passenger than private cars. It lowers fuel consumption and associated land use for roads and parking.

Option B:
Option B is incorrect as afforestation and forest protection expand biocapacity rather than demand. They can help balance or even reduce the ecological deficit by increasing nature’s ability to regenerate resources and absorb carbon.

Option C:
Option C is incorrect because improving energy efficiency reduces the energy needed for the same level of output or comfort. This typically lowers resource use and emissions, thereby shrinking the ecological footprint if rebound effects are controlled.

Option D:
Option D is correct since increased meat consumption, energy-hungry lifestyles and air travel are well-known drivers of higher footprints in affluent societies. These behaviours raise per capita resource demand and waste generation beyond what local or global ecosystems can sustainably supply.