UGC NET Questions (Paper – 1)

Climate smart agriculture (CSA) is explicitly defined as an approach that pursues three objectives: sustainably increasing agricultural productivity,adapting and building resilience to climate change and reducing or removing greenhouse gas emissions where possible. The stem restates these three aims,so climate smart agriculture is clearly the intended term. Therefore Option C is correct.

Option A:
Subsistence agriculture focuses on producing food mainly for household consumption with low external inputs. It is not inherently designed around climate resilience or mitigation objectives,so it does not match the description.

Option B:
Intensive agriculture emphasises high yields per unit area,often through heavy use of fertilisers,irrigation and pesticides. Without specific safeguards,it can worsen emissions and vulnerability,which is opposite to the climate smart goals.

Option C:
Climate smart agriculture encourages practices like improved crop varieties,water management,agroforestry and better livestock feeding. These techniques address productivity,resilience and emissions together,just as the question describes.

Option D:
Slash and burn agriculture involves clearing and burning vegetation to create temporary fields. It can lead to deforestation and higher emissions and is generally not considered climate smart,so this option is inappropriate.

Statements A, B, C and E are correct because they describe the multi-dimensional nature of food security, the influence of climate change, the role of sustainable practices and the contribution of diversification to resilience. D is false since food loss and waste directly affect availability and access, and F is false because agricultural policies must consider environmental sustainability to avoid long-term degradation. Therefore, the correct combination is A, B, C and E only.

Option A:
Option A is incomplete, because it omits E and thus underplays the importance of diversification and resilience strategies for farming households. It focuses only on definitions and broad drivers.

Option B:
Option B is incorrect as it includes D, claiming post-harvest losses are irrelevant. This contradicts evidence that reducing losses and waste is a major lever for improving food security without expanding production.

Option C:
Option C is correct since it collects all four true statements while excluding D and F, which ignore key aspects of food systems and sustainability. It provides a comprehensive view of food security in a changing environment.

Option D:
Option D is incorrect because it accepts F and omits A, thereby denying the need for environmentally sensitive agricultural policies and neglecting the standard four-pillar definition of food security.

Statement C is clearly wrong because climate change can affect food production, availability and access, which in turn influences nutrition and health. Statements A, B and D are correct as they reflect established links between heatwaves and mortality, climate-sensitive disease vectors and disruption of health systems by extreme events. Since only C is incorrect, the combination that identifies C alone as wrong is the correct answer.

Option A:
Option A is incorrect because it treats both A and C as wrong, whereas statement A is accurate. Rising temperatures and more frequent heatwaves are associated with heat stress, dehydration and increased mortality, especially among vulnerable groups. Including a correct statement in the wrong set makes the option unacceptable.

Option B:
Option B is incorrect because it marks both C and D as wrong. While C is wrong, D is correct since floods, storms and other extremes can damage hospitals, supply chains and health infrastructure. Misclassifying D as wrong contradicts disaster and health studies.

Option C:
Option C is incorrect because it claims A, C and D are all wrong. A and D are correct descriptions of climate-related health impacts. By placing them in the wrong set, this option conflicts with widely accepted scientific assessments.

Option D:
Option D is correct because it isolates statement C as the only incorrect statement. It acknowledges that climate change can and does influence food security and nutrition, which C wrongly denies, while recognising that A, B and D accurately describe other health impacts.

Desertification refers to land degradation in arid, semi-arid and dry sub-humid areas resulting from various factors, including inappropriate land use and climatic variations. Overgrazing removes vegetation cover, and deforestation exposes soil to erosion and moisture loss. Over time, these processes degrade soil structure and nutrients, reducing its productivity. A major consequence is declining agricultural yields and increased vulnerability to drought, which is correctly summarised in Option A.

Option A:
Option A is correct because it links human-induced pressures like overgrazing and deforestation with the key impact of reduced soil fertility and crop productivity. This combination is frequently cited in discussions of desertification and food security.

Option B:
Option B is incorrect as increased forest cover and soil conservation typically help prevent desertification rather than cause it. They are part of the solution, not the problem.

Option C:
Option C is incorrect because sustainable irrigation is a preventive measure; it can help maintain soil health and water tables. Desertification is more often associated with unsustainable irrigation such as waterlogging and salinisation.

Option D:
Option D is incorrect since organic farming and agroforestry generally enhance biodiversity and soil quality, countering desertification rather than causing it.

Statements C and D are wrong. Urban agriculture can provide environmental benefits such as increased green cover and reduced food miles, so saying it always increases pollution is incorrect. Policies do not universally guarantee secure land and resources; many urban farmers face tenure insecurity and regulatory barriers. Statements A and B accurately describe activities and benefits of urban agriculture. Hence, the wrong statements together are C and D.

Option A:
Option A is incorrect because it singles out C only and ignores D, even though D is also clearly wrong. Many cities lack comprehensive policies to secure land and resources for urban farmers, so failing to mark D as wrong misses an important limitation.

Option B:
Option B is incorrect as it selects D only. While D is wrong, C is also incorrect in denying potential environmental benefits. Selecting only one of the two wrong statements does not fully answer the question.

Option C:
Option C is incorrect since it treats A and C as wrong. Statement A correctly defines urban agriculture as involving plant and small animal production in and around cities. Grouping a correct definition with a wrong statement leads to an invalid combination.

Option D:
Option D is correct because it identifies both misleading statements together. It acknowledges that urban agriculture can have environmental benefits and that supportive policies are not universally guaranteed, which is consistent with empirical evidence.

Statements B, C and D are correct because they show that food security is influenced by climate impacts, sustainable practices and multiple dimensions beyond sheer output. Climate extremes affect yields, sustainable agriculture balances productivity and environmental health and food security includes access and nutrition. Statement A is incorrect since national production alone does not guarantee that people can access or afford adequate, nutritious food. Therefore, the combination that includes B, C and D and excludes A is the correct answer.

Option A:
Option A is incorrect because it leaves out D, which correctly emphasises access and nutritional quality as core components of food security. Restricting the concept to production and climate-impacted yields fails to capture the full meaning of food security.

Option B:
Option B is incorrect as it adds statement A, which wrongly claims that only total national production matters. By including A, this option accepts a narrow and misleading view of food security that ignores distribution and affordability issues.

Option C:
Option C is incorrect because it declares all four statements A, B, C and D to be correct. Since A is clearly false in light of the multidimensional definition of food security, this combination cannot be accepted.

Option D:
Option D is correct because it lists exactly those statements that align with widely accepted definitions of food security and environmental sustainability. It highlights climate effects, sustainable agricultural responses and the multi-dimensional nature of security, while rejecting the simplistic production-only view in A.

Food security is defined by availability,access,utilisation and stability of food supplies for all people. The stem directly echoes this definition by stressing physical and economic access to sufficient,safe and nutritious food at all times. Therefore food security is the correct term. It is a central concept in development policy and global agendas.

Option A:
Food security frameworks emphasise not just the quantity of food but its quality and continuous availability,including during shocks. Because the question repeats these elements,this option precisely captures the intended meaning.

Option B:
Nutritional transition refers to changes in dietary patterns,often towards more processed and energy dense foods as incomes rise. While related,it does not in itself guarantee universal access to adequate food,so it is not the best match.

Option C:
The green revolution was a period of rapid growth in agricultural productivity due to high yielding varieties and inputs. It increased food production but did not automatically ensure equitable access or nutrition,so it is not synonymous with the goal described.

Option D:
Land reforms involve redistribution or regulation of land ownership and tenancy. They can support food security but are one policy tool rather than the overarching concept stated in the stem.

Sustainable agriculture aims to meet present food needs without compromising the ability of future generations to meet their own needs from the same resource base. It emphasises soil conservation,efficient water use and reduced chemical dependence. The stem highlights maintaining fertility,conserving water and protecting the environment for long term productivity,which clearly fits sustainable agriculture. Thus sustainable is the correct option.

Option A:
Subsistence agriculture focuses on producing enough food mainly for the farmer’s family with little surplus. It may or may not follow environmentally sound practices and is not defined by long term resource stewardship,so it does not fully match the description.

Option B:
Commercial agriculture is oriented toward market production and profit, often using high levels of inputs. Without specific safeguards,it can cause soil and water degradation. Therefore it does not inherently reflect the sustainability criteria mentioned in the question.

Option C:
Sustainable agriculture integrates ecological principles such as crop rotation,integrated pest management and agroforestry. These practices maintain productivity while minimising negative environmental impacts. This directly corresponds to the goals listed in the stem.

Option D:
Shifting agriculture involves clearing forest patches, cultivating them briefly and then moving on. It can be sustainable at low population densities but is not primarily defined by deliberate conservation measures,so it is not the best term here.

Excessive tilling breaks down soil structure and exposes bare soil to wind and water. Removing all crop residues leaves the surface unprotected, making it easier for topsoil to be washed or blown away. Over time, this erosion removes nutrient-rich layers and organic matter, leading to reduced fertility and productivity. Thus, the most likely environmental consequence is increased soil erosion and declining soil quality, as described in option D.

Option A:
Option A is incorrect because unsustainable practices usually reduce organic matter by exposing it to rapid decomposition and erosion. Permanent increases in fertility require conservation measures, not intensive disturbance.

Option B:
Option B is incorrect; such practices tend to worsen, not eliminate, soil erosion. Protective cover and conservation tillage are needed to significantly reduce erosion rates.

Option C:
Option C is incorrect because rapid groundwater recharge is more closely linked to practices like contour bunding, percolation tanks and maintaining soil structure. Intensive tilling and residue removal can increase runoff instead of infiltration.

Option D:
Option D is correct since it captures how soil mismanagement can degrade land over time. Loss of topsoil diminishes the land’s capacity to support crops and can contribute to siltation of downstream water bodies.

Statements A, B, C, D and F are correct and capture resource waste, climate impacts, food security implications, behavioural drivers and policy responses. Statement E is false because food waste represents financial loss for households and businesses and adds costs for municipal waste management. Therefore, the combination that includes all true statements and excludes E is A, B, C, D and F only.

Option A:
Option A is correct as it reflects the full range of environmental, economic and social dimensions of food waste, while rejecting the claim that there are no economic implications.

Option B:
Option B is incorrect because it omits F, thereby ignoring policies and campaigns that are central to reducing waste in practice.

Option C:
Option C is incorrect since it includes E, which denies economic consequences, so it mixes true and false statements and cannot be the correct option.

Option D:
Option D is incorrect because it leaves out B, ignoring methane generation from landfilled food waste, which is a key greenhouse gas concern.

Statements A, B, C, D and F are correct, covering disease patterns, heat stress, food security, mental health and the role of health systems in adaptation. Statement E is false because climate change can affect occupational health through heat stress, extreme weather and air quality, thereby influencing productivity. The combination that includes A, B, C, D and F while excluding E is therefore correct.

Option A:
Option A is incorrect because it omits F, ignoring the crucial role of resilient health systems and surveillance in managing climate-sensitive diseases and impacts.

Option B:
Option B is correct as it presents a broad and accurate view of health dimensions of climate change and highlights system-level adaptation measures while rejecting the idea that occupational health is unaffected.

Option C:
Option C is incorrect since it includes E, which denies occupational impacts, even though heat and outdoor work conditions are well-known channels of risk.

Option D:
Option D is incorrect as it leaves out B and thus fails to mention the very prominent health risk from increasing heatwaves, which is central in climate–health discussions.