CUET UG Economics Booster Test 2 - Environment and Its Functions -

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CUET UG Economics Booster Test 2 - Environment and Its Functions

⏱️ 30 Minutes

❓ 20 Questions

📌 Answers are locked once submitted — results and explanations appear at the end.

CUET UG Economics Booster Test 2 - Environment and Its Functions

1 / 20

QUESTION 1 OF 20

Which of the following statements correctly applies to the definition of environment?
I. It comprises only the natural resources that are currently being extracted.
II. It encompasses the total planetary inheritance and the totality of all resources.

Answer Review

1 Which of the following statements correctly applies to the definition of environment?
I. It comprises only the natural resources that are currently being extracted.
II. It encompasses the total planetary inheritance and the totality of all resources.

A Only I is correct

B Only II is correct

C Both I and II are correct

D Neither I nor II is correct

💡 Short Explanation

Statement I is too restrictive because it ignores non-extracted and non-material elements. Statement II aligns perfectly with the foundational macroeconomic definition of the environment. The environment covers all biophysical assets, not just active economic inputs.

✅ Correct Answer Explanation

The environment cannot be reduced merely to the natural materials humans choose to harvest at any given moment. Statement I is incorrect because it leaves out unextracted resources, non-commercial species, and abiotic elements. Statement II is completely accurate; the environment is defined in environmental economics as our entire global planetary inheritance alongside the total sum of all physical and biological resources.

❓ Why Other Options Are Incorrect

Option A → Incorrect because Statement I is false; restricting the definition to "currently being extracted" misses the entire baseline of natural capital.
Option C → Incorrect because Statement I contains a glaring conceptual error, meaning both statements cannot be correct.
Option D → Incorrect because Statement II is a standard textbook definition that must be validated.

🎯 Strategy

Used: Extreme Word Filter

Application: The presence of the restrictive modifier "only" in Statement I indicates an artificially narrow scope that typically signals an incorrect option in environmental definitions.

Final Logic: Filtering out Statement I leaves Statement II as the sole factually robust choice.

🧠 Memory Trick

Environment = Everywhere & Everything (Total Planetary Inheritance).

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Meaning of Environment

2 Match List I (Components) with List II (Examples):

List I	List II
1. Biotic	a. Study of ecology
2. Abiotic	b. Fishes and birds
3. Inter-relationship	c. Planetary inheritance
4. Totality	d. Rocks and land

A 1-b, 2-c, 3-a, 4-d

B 1-d, 2-b, 3-a, 4-c

C 1-b, 2-d, 3-c, 4-a

D 1-b, 2-d, 3-a, 4-c

💡 Short Explanation

Biotic refers directly to living biological organisms (1 > b). Abiotic maps to physical, non-living elements like geology (2 > d). Inter-relationship forms the core foundation of ecology (3 > a). Totality matches the concept of global planetary inheritance (4 > c).

✅ Correct Answer Explanation

Breaking down the matches one by one makes the answer clear: Biotic factors are living components, which perfectly matches fishes and birds (1-b). Abiotic elements are non-living materials, matching rocks and land (2-d). The web of dynamic connections and inter-relationships is what the study of ecology examines (3-a). Totality describes our comprehensive planetary inheritance (4-c). This exact distribution is found only in Option D.

❓ Why Other Options Are Incorrect

Option A → Incorrect because it incorrectly pairs Abiotic with planetary inheritance (2-c) and Totality with rocks/land (4-d).
Option B → Incorrect because it mixes up the definitions, pairing Biotic with non-living rocks (1-d) and Abiotic with living birds (2-b).
Option C → Incorrect because it mismatches Totality with ecology (4-a) and Inter-relationship with planetary inheritance (3-c).

🎯 Strategy

Used: Option Grouping

Application: Start by grouping the clear, foundational terms first: Biotic (1-b) and Abiotic (2-d). This step instantly rules out options A and B. Final Logic: Between choices C and D, pairing 3-a (Inter-relationship > Ecology) locks in Option D as the mathematically correct sequence.

🧠 Memory Trick

Biotic = Birds (Living); Abiotic = Any stone/rock (Non-living).

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Components of Environment

3 How do living organisms (biotic elements) primarily interact with the environment?

A By continuously influencing and being influenced by abiotic factors

B By existing independently without relying on land or water

C By only providing aesthetic services to humans

D By increasing the carrying capacity limitlessly

💡 Short Explanation

Ecosystems function through a continuous feedback loop between living things and physical matter. No organism exists in total isolation from its physical surroundings. These two-way interactions are what keep ecological balances stable.

✅ Correct Answer Explanation

Living organisms (biotic elements) do not exist in a vacuum. Instead, they interact with the environment through a continuous, two-way relationship with non-living (abiotic) forces. For instance, plants rely on soil nutrients and sunlight to grow, and in turn, they release oxygen and help build up organic soil layers. This ongoing mutual relationship is the foundation of life support systems.

❓ Why Other Options Are Incorrect

Option B → Incorrect because living things cannot exist independently; biological life relies entirely on abiotic assets like water and land.
Option C → Incorrect because providing aesthetic scenery is just a minor, human-centered byproduct of nature, not the primary way organisms interact with it.
Option D → Incorrect because carrying capacity is constrained by planetary boundaries and physics; it cannot be increased limitlessly.

🎯 Strategy

Used: Elimination

Application: Eliminate options that claim impossible things, like completely independent existence (B) or limitless capacity expansion (D). Final Logic: Option A is selected because it correctly describes the continuous, two-way relationship that defines basic ecology.

🧠 Memory Trick

Interaction = Two-Way Action (Influencing and being influenced).

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Environmental Interaction

4 Assertion (A): Forests and wildlife are critical biotic components that sustain biodiversity.
Reason (R): Forests act as a habitat for wildlife and are a source of renewable resources.

A Both false

B A true, R false

C Both true, R explains A

D A false, R true

💡 Short Explanation

Forests and wildlife are living systems that help maintain genetic diversity. Forests provide the physical habitat that wildlife needs to survive. The supporting role of forests explains why they are critical for biodiversity.

✅ Correct Answer Explanation

Assertion (A) is correct because both forests (flora) and wildlife (fauna) are living biological assets that preserve the planet's genetic diversity. Reason (R) is also correct and provides the logical explanation: forests serve as the essential physical habitat and shelter for wildlife, while also acting as self-replenishing renewable resources. Because forests provide this vital habitat, they directly explain how and why these components work together to sustain biodiversity.

❓ Why Other Options Are Incorrect

Option A → Incorrect because both statements are factually correct environmental principles.
Option B → Incorrect because the reason is true; forests are indeed renewable habitats.
Option D → Incorrect because the assertion is fully accurate.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: Test the connection using "because": "Forests and wildlife are critical for biodiversity because forests provide the habitat that wildlife needs to survive." The statement flows logically.

Final Logic: The reason details the functional connection that supports the main assertion.

🧠 Memory Trick

Forests house wildlife, which directly explains why they sustain biodiversity together.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Biotic Elements

5 The degradation of abiotic elements (air and water) due to human activity where extraction > regeneration leads to:

A Increase in carrying capacity

B Enhanced assimilative limit

C Decrease in environmental quality leading to an environmental crisis

D Rate of extraction < Rate of regeneration

💡 Short Explanation

Over-extracting resources breaks the environment's balance ($Extraction > Regeneration$). This imbalance results in a steady drop in resource quality. When human demand crosses these lines, it triggers an environmental crisis.

✅ Correct Answer Explanation

When human economic demands cross sustainable thresholds—meaning resource extraction outpaces nature's rate of regeneration ($RE > RR$)—the natural capital stock begins to shrink. For abiotic elements like air and water, this imbalance shows up as severe pollution and depletion. The direct result of crossing these limits is a drop in environmental quality, which leads toward an environmental crisis.

❓ Why Other Options Are Incorrect

Option A → Incorrect because environmental degradation reduces or strains carrying capacity; it never increases it.
Option B → Incorrect because heavy pollution overloads and degrades nature's assimilative limits rather than enhancing them.
Option D → Incorrect because it reverses the inequality stated in the question.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: The problem describes a negative scenario where extraction exceeds regeneration ($E > R$). This requires an answer with a matching negative outcome. Final Logic: Option C is the only choice that accurately describes the negative impact of resource depletion.

🧠 Memory Trick

Extraction > Regeneration = Crisis.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Environmental Crisis Drivers

6 While land suffers from varying degrees of degradation due to improper agricultural practices, _______ remains an abundant abiotic energy source in India.

A Sunlight

B Fossil fuel

C Coal

D Ground water

💡 Short Explanation

The question asks for an abundant, non-living (abiotic) energy source. India's geography gives it vast, reliable access to solar radiation. Fossil fuels and groundwater are depletable assets, not unlimited energy sources.

✅ Correct Answer Explanation

While land resources are often strained by topsoil erosion and over-cultivation, India's geographical location gives it a massive advantage in solar energy. Sunlight is an abundant, inexhaustible, and non-living (abiotic) energy source. Utilizing solar power helps reduce the pressure on traditional, depletable fossil fuels.

❓ Why Other Options Are Incorrect

Option B → Incorrect because fossil fuels are finite, non-renewable, and rapidly depleting rather than continuously abundant.
Option C → Incorrect because coal is a highly polluting, exhaustible fossil fuel reserve.
Option D → Incorrect because groundwater is a liquid resource currently facing severe depletion from over-extraction, not an abundant energy source.

🎯 Strategy

Used: Odd One Out

Application: Options B, C, and D all describe resources that face depletion or scarcity in India. Option A is the only truly unlimited, perpetual energy source.

Final Logic: Sunlight stands out as India's main abundant, clean, and non-living alternative energy asset.

🧠 Memory Trick

Abundant, clean, and infinite energy from above > Sunlight.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Abiotic Resources & Renewable Energy

7 Arrange the sequential effects of breaking the interdependence between environmental elements:
1. Depletion of biotic/abiotic resources
2. Intensive extraction by humans
3. Disruption of inter-relationships
4. Environmental crisis

A 1, 2, 3, 4

B 2, 3, 1, 4

C 3, 1, 2, 4

D 4, 3, 2, 1

💡 Short Explanation

The process begins with human economic activity (intensive extraction). This heavy extraction disrupts the natural relationships between ecosystems. This disruption leads to the physical depletion of resources. The end result of this chain reaction is a full environmental crisis.

✅ Correct Answer Explanation

To map out the sequence accurately: 1. It begins with human actions: Intensive extraction by humans (2). 2. This excessive extraction strains natural cycles, leading to a Disruption of inter-relationships (3). 3. Once these ecological relationships break down, resources can no longer regenerate, causing Depletion of biotic/abiotic resources (1). 4. This widespread resource depletion ultimately triggers a full Environmental crisis (4). This makes the logical sequence 2, 3, 1, 4, which matches Option B.

❓ Why Other Options Are Incorrect

Option A → Incorrect because resource depletion (1) cannot happen before intensive human extraction (2) sets it in motion.
Option C → Incorrect because it puts the disruption of relationships (3) before the human extraction (2) that actually causes it.
Option D → Incorrect because it reverses the sequence, placing the final crisis (4) at the very start of the timeline.

🎯 Strategy

Used: Elimination

Application: Identify the starting trigger and the final result. Intensive extraction (2) is the initial cause, and the environmental crisis (4) is the ultimate effect. Final Logic: Only Option B starts with step 2 and ends with step 4, showing the correct cause-and-effect sequence.

🧠 Memory Trick

Human Extraction (2) > Broken Balances (3) > Empty Reserves (1) > System Collapse (4).

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Environmental Degradation Chronology

8 What is the single most unstable and potentially disruptive element in the scheme of ecological balance?

A Solar radiation

B Wildlife

C Ocean currents

D The human species

💡 Short Explanation

Natural forces like solar cycles and ocean currents follow predictable patterns. Wildlife operates within balanced food webs and natural limits. Human industrial activities introduce rapid, artificial pressures that disrupt this balance.

✅ Correct Answer Explanation

While natural systems operate in balanced, self-regulating cycles, human industrial development, resource extraction, and pollution introduce rapid disruptions to these cycles. The scale of modern human activity has altered ecosystems much faster than natural systems can adapt, making the human species the primary disruptive factor in global ecological balance.

❓ Why Other Options Are Incorrect

Option A → Incorrect because solar radiation is a stable, consistent driver of life processes on Earth.
Option B → Incorrect because wildlife populations adapt naturally within their ecosystem limits without causing systemic disruption.
Option C → Incorrect because ocean currents are regular physical systems that distribute global heat, rather than unstable disruptors.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: The question asks for a uniquely volatile and disruptive force. Natural elements (sun, oceans, animals) maintain balance, while human industrial expansion drives environmental crises. Final Logic: Option D is the clear choice as it represents the primary source of artificial stress on global ecosystems.

🧠 Memory Trick

The main driver of modern environmental crises is Human Activity.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Human Impact on Environment

9 Which condition ensures that a continuous supply of renewable resources remains available?

A When extraction equals total exhaustion

B When extraction is not above the rate of regeneration

C When renewable resources are substituted by non-renewable ones

D When the absorptive capacity is zero

💡 Short Explanation

Renewable resources can replenish themselves over time. To keep a resource available, we cannot harvest it faster than it grows. Keeping extraction at or below the regeneration rate ensures a steady supply.

✅ Correct Answer Explanation

A continuous supply of renewable resources depends on a simple balance: resource harvest cannot exceed resource growth ($Extraction \le Regeneration$). When extraction stays within this regenerative limit, nature can completely replenish the harvested stock. This balance preserves the natural capital baseline, allowing future generations to use the resource.

❓ Why Other Options Are Incorrect

Option A → Incorrect because extracting a resource until it is exhausted completely destroys the stock, preventing it from renewing.
Option C → Incorrect because replacing renewable resources with finite, non-renewable ones moves away from long-term sustainability.
Option D → Incorrect because an environment with zero absorptive capacity would quickly choke on its own waste, disrupting all natural cycles.

🎯 Strategy

Used: Dimensional/Unit Analysis

Application: Think of the problem as a balance sheet. To avoid running out, the amount taken out (Extraction) must be less than or equal to the amount being put back in (Regeneration). Final Logic: This mathematical balance ($RE \le RR$) is what defines sustainable resource use.

🧠 Memory Trick

Harvest $\le$ Growth = Unlimited Supply.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Sustainable Resource Management

10 Non-renewable resources pose a challenge for sustainable development because they _______ with extraction and use, forcing exploration of new resources.

A Regenerate faster

B Provide genetic diversity

C Get exhausted

D Cannot be traded economically

💡 Short Explanation

Non-renewable resources exist in fixed geological quantities. Using these resources permanently depletes their finite reserves. This continuous depletion leads toward eventual exhaustion.

✅ Correct Answer Explanation

Non-renewable resources, such as fossil fuels and mineral ores, are finite assets that take millions of years to form beneath the earth's crust. Because they do not replenish on a human timescale, any extraction permanently reduces the remaining supply. They get exhausted over time, which presents a core challenge for sustainable development and forces us to look for alternative energy options.

❓ Why Other Options Are Incorrect

Option A → Incorrect because non-renewable resources do not regenerate on a practical human timescale ($Regeneration \approx 0$).
Option B → Incorrect because genetic and biological diversity is a characteristic of living, biotic ecosystems, not underground mineral reserves.
Option C → Incorrect because fossil fuels and minerals are highly valued, heavily traded commodities in the global economy.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: The sentence points out a key challenge of non-renewable resources that forces us to search for alternatives. The term "get exhausted" fits this context perfectly. Final Logic: Exhaustion is the defining physical property that makes these resources finite.

🧠 Memory Trick

Non-renewable = Finite = Exhaustible.

📚 BATCH 2: QUESTIONS 11–20

11 Match List I (Resource scenario) with List II (Outcome):

List I	List II
1. Overfishing	a. Resource depletion
2. Sustainable forestry	b. Loss of green cover
3. Exhaustion of fish	c. Loss of renewable resource supply
4. Deforestation	d. Maintains resource supply

A 1-d, 2-c, 3-b, 4-a

B 1-b, 2-a, 3-d, 4-c

C 1-a, 2-b, 3-c, 4-d

D 1-a, 2-d, 3-c, 4-b

💡 Short Explanation

Overfishing is a primary cause of marine resource depletion (1 > a). Sustainable forestry keeps resource extraction and supply in balance (2 > d). Complete exhaustion of fish leads to a permanent loss of that resource supply (3 > c). Deforestation results in a direct loss of forest green cover (4 > b).

✅ Correct Answer Explanation

Let's verify each match step by step: Overfishing extracts marine resources faster than they can reproduce, leading to resource depletion (1-a). Sustainable forestry balances cutting with replanting, which maintains a steady resource supply (2-d). Exhaustion of fish means the breeding stock is depleted, causing a loss of that renewable resource supply (3-c). Deforestation cuts down trees across large areas, resulting in a direct loss of green cover (4-b). This exact arrangement is found only in Option D.

❓ Why Other Options Are Incorrect

Option A → Incorrect because it matches overfishing with maintaining supply (1-d) and sustainable forestry with loss of supply (2-c), which is backward.
Option B → Incorrect because it links overfishing directly to losing forest green cover (1-b), which mixes up marine and land ecosystems.
Option C → Incorrect because it pairs sustainable forestry with a loss of green cover (2-b), ignoring the sustainable aspect of the practice.

🎯 Strategy

Used: Option Grouping

Application: Start by pairing the most straightforward, unambiguous terms: Deforestation causes a loss of green cover (4-b). This single match rules out options A, B, and C immediately.

Final Logic: Since 4-b is unique to Option D, the remaining matches can be verified to confirm the choice.

🧠 Memory Trick

Deforestation = Lost Green Cover (4 to b); Sustainable = Maintained Supply (2 to d).

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Resource Degradation Examples

12 Consider the statements regarding fossil fuels:
I. Fossil fuels are non-renewable resources.
II. Burning fossil fuels contributes significantly to global warming.

A Both I and II are correct

B Only I is correct

C Only II is correct

D Neither I nor II is correct

💡 Short Explanation

Fossil fuels rely on finite geological reserves that cannot easily regenerate. Burning these fuels releases large amounts of greenhouse gases like carbon dioxide. These emissions drive the greenhouse effect and global warming.

✅ Correct Answer Explanation

Statement I is accurate because fossil fuels (like coal, petroleum, and natural gas) are finite resources that cannot regenerate on a human timescale. Statement II is also accurate because burning fossil fuels releases greenhouse gases like carbon dioxide ($CO_2$) into the atmosphere. These gases trap solar heat, making fossil fuel consumption a major driver of modern global warming. Since both statements are correct, Option A is the right choice.

❓ Why Other Options Are Incorrect

Option B → Incorrect because it overlooks the well-established environmental impact of fossil fuel emissions described in Statement II.
Option C → Incorrect because it ignores the physical property that fossil fuels are finite and non-renewable, as stated in Statement I.
Option D → Incorrect because both statements are established environmental facts that cannot be rejected.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: Both statements represent foundational concepts in basic climate science and environmental economics, so they should be validated together.

Final Logic: Since both statements are scientifically accurate, they point directly to Option A.

🧠 Memory Trick

Fossil fuels are Finite (I) and Polluting (II) > Both statements are correct.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Fossil Fuels and Global Warming

📄 Passage

"When this is not so, the environment fails to perform its third and vital function of life sustenance and this results in an environmental crisis... Many resources have become extinct and the wastes generated are beyond the absorptive capacity of the environment. Absorptive capacity means the ability of the environment to absorb degradation."

What happens when wastes generated are beyond the environment's ability to assimilate them?

A The environment automatically expands its capacity

B Renewable resources regenerate faster

C The waste transforms into fossil fuels

D It causes environmental degradation and crisis

💡 Short Explanation

The text states that crossing natural capacities leads to a failure in life sustenance. Generating waste beyond these limits overloads natural systems. The passage explicitly links this overload to an environmental crisis.

✅ Correct Answer Explanation

According to the passage, when the volume of waste exceeds the environment's natural limits, the system can no longer process the pollution. The text explicitly states that when waste goes "beyond the absorptive capacity of the environment," it prevents the system from sustaining life and "results in an environmental crisis". This directly supports Option D.

❓ Why Other Options Are Incorrect

Option A → Incorrect because the environment operates on fixed ecological boundaries; it does not automatically expand its capacity to handle more pollution.
Option B → Incorrect because high levels of pollution stress ecosystems, slowing down resource regeneration instead of speeding it up.
Option C → Incorrect because turning organic waste into fossil fuels requires millions of years of geological pressure, not just an excess of pollution.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: Match the question with the exact terms and warnings provided in the text. The passage explicitly links excessive waste directly to an "environmental crisis". Final Logic: Option D uses the precise cause-and-effect relationship outlined by the author.

🧠 Memory Trick

Waste > Capacity = Environmental Crisis (stated directly in the text).

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Absorptive Capacity Overload

📄 Passage

How is "absorptive capacity" defined in the given passage?

A The rate at which the population grows

B The ability of the environment to absorb degradation

C The speed of economic development

D The process of genetic mutation

💡 Short Explanation

This is a direct text-matching question. The final sentence of the passage provides the exact definition. The correct answer must match this definition word-for-word.

✅ Correct Answer Explanation

The passage concludes with a clear, direct definition: "Absorptive capacity means the ability of the environment to absorb degradation." Option B matches this sentence exactly, making it the clear and correct choice based on the text.

❓ Why Other Options Are Incorrect

Option A → Incorrect because population growth is a demographic trend, not the definition of an ecosystem's absorption limit.
Option C → Incorrect because economic development measures production and income, which is separate from natural absorption capacity.
Option D → Incorrect because genetic mutation is a biological process, not the environment's capacity to handle pollution.

🎯 Strategy

Used: Elimination

Application: Locate the term "Absorptive capacity" in the text and match the text that follows it to rule out the incorrect options. Final Logic: Option B is a word-for-word match with the definition provided in the passage.

🧠 Memory Trick

Look at the last sentence: it defines the term exactly as written in Option B.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Absorptive Capacity Definition

15 How does biodiversity support contribute to the economy?

A It sustains life, allowing the environment to provide vital functions necessary for development.

B It decreases the carrying capacity of the environment.

C It guarantees the permanent supply of non-renewable resources.

D It accelerates the depletion of resources.

💡 Short Explanation

Biodiversity provides the biological foundation that keeps ecosystems stable. Stable ecosystems perform basic life-support services like nutrient cycling. These natural services provide the baseline resources that human economies need to develop.

✅ Correct Answer Explanation

Biodiversity support is a foundational function of the environment. It maintains genetic variation and species relationships, which keeps ecosystems resilient and stable. This stability ensures that nature can reliably perform its key functions—like purifying water, cycling nutrients, and renewing resources—which provide the essential baseline needed for economic development.

❓ Why Other Options Are Incorrect

Option B → Incorrect because biodiversity supports and stabilizes an ecosystem's carrying capacity rather than decreasing it.
Option C → Incorrect because biodiversity deals with living ecosystems; it cannot create an endless supply of finite minerals or fossil fuels.
Option D → Incorrect because healthy biodiversity helps protect and renew resources, rather than accelerating their depletion.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: The question asks for a positive contribution of biodiversity to the economy. This requires an answer with a positive, constructive tone. Final Logic: Option A is the only choice that frames biodiversity as a supportive foundation for sustainable development.

🧠 Memory Trick

Biodiversity = Life Sustenance = Economic Foundation.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Life Sustenance Functions

16 The function of life sustenance is performed by the environment by providing biological and _______ diversity.

A Industrial

B Artificial

C Genetic

D Mechanized

💡 Short Explanation

Life sustenance depends on the diversity within biological systems. Standard environmental frameworks emphasize two core pillars of diversity. These two pillars are biological (species) diversity and genetic diversity.

✅ Correct Answer Explanation

The environment sustains life on Earth by maintaining diverse ecosystems. In textbook definitions, this life-sustenance function is achieved through two main pillars: biological diversity and genetic diversity. Genetic diversity gives species the variation they need to adapt to changing environmental conditions, protecting the stability of the wider ecosystem.

❓ Why Other Options Are Incorrect

Option A → Incorrect because "industrial" refers to human-made manufacturing systems, which are separate from natural ecological diversity.
Option B → Incorrect because natural life support relies on authentic, organic ecosystems rather than artificial setups.
Option C → Incorrect because "mechanized" describes automated machinery and engineering, not biological diversity.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: The sentence focuses on biological life sustenance, meaning the missing word must be a biological term rather than a technological or industrial one. Final Logic: Genetic diversity is the correct scientific term that fits alongside biological diversity.

🧠 Memory Trick

Bio-diversity goes hand-in-hand with Genetic diversity.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Functions of Environment

17 Assertion (A): Aesthetic services like scenic beauty have an economic value in terms of tourism and well-being.
Reason (R): Scenic beauty is a non-renewable resource that gets exhausted instantly upon viewing.

A Both false

B A true, R false

C Both true, R explains A

D A false, R true

💡 Short Explanation

Natural landscapes hold clear economic value by supporting global tourism. Looking at a landscape does not deplete or destroy it. This means scenic beauty is a continuous service, making the reason false.

✅ Correct Answer Explanation

Assertion (A) is correct because aesthetic services, like beautiful natural scenery, generate real economic value by driving eco-tourism, creating recreation jobs, and improving human well-being. Reason (R) is incorrect because scenic beauty is a continuous, non-extractive environmental service. Looking at a mountain or an ocean does not consume or exhaust it; the scenery remains available for others to enjoy. Therefore, A is true but R is false.

❓ Why Other Options Are Incorrect

Option A → Incorrect because it rejects Assertion (A), which correctly notes the economic value of tourism and well-being.
Option C → Incorrect because it treats the false claim in Reason (R) as a factually correct statement.
Option D → Incorrect because it incorrectly labels the accurate assertion as false while validating the incorrect reason.

🎯 Strategy

Used: Elimination

Application: Evaluate Reason (R) first. The claim that scenery is "exhausted instantly upon viewing" is clearly false. Recognizing this allows you to quickly rule out options A, C, and D.

Final Logic: Since Reason (R) is false, Option B is the only possible correct choice.

🧠 Memory Trick

Looking at a landscape doesn't destroy it, so the idea that it is "instantly exhausted" is false.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Aesthetic Services

18 Which environmental function does NOT deal directly with resource extraction or waste, but improves human quality of life?

A Aesthetic services

B Waste assimilation

C Non-renewable resource supply

D Carrying capacity

💡 Short Explanation

The question asks about a non-extractive function that improves quality of life. Waste assimilation and resource supply focus directly on physical inputs and outputs. Aesthetic services provide psychological and recreational benefits through nature's beauty.

✅ Correct Answer Explanation

The environment provides several key services. While resource supply and waste assimilation deal with the physical inputs and outputs of industrial economies, aesthetic services focus on non-material benefits. These services include the enjoyment of natural scenery, open spaces, and wilderness. They improve human well-being and quality of life without requiring the extraction or destruction of the underlying resource.

❓ Why Other Options Are Incorrect

Option B → Incorrect because waste assimilation deals directly with processing the physical waste produced by consumption and industry.
Option C → Incorrect because non-renewable resource supply focuses on extracting finite physical materials like coal or oil from the earth.
Option D → Incorrect because carrying capacity is a metric that defines the sustainable limits of an ecosystem, rather than a direct consumer service.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: Look for the specific category that focuses on improving human life without involving extraction or waste management. Final Logic: Option A is the correct match, as aesthetic services represent the non-material, appreciative value of nature.

🧠 Memory Trick

Quality of life from beautiful views = Aesthetic Services.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Aesthetic Services

19 If Wastes generated (W) > Absorptive capacity (AC), what is the direct outcome regarding the environment's limits?

A Carrying capacity increases

B Assimilation becomes zero

C Sustainable development is achieved

D The limit of the environment is breached, causing degradation

💡 Short Explanation

Absorptive capacity is the environment's limit for safely processing waste. When waste output ($W$) exceeds this capacity ($AC$), the surplus builds up in ecosystems. This overload breaches environmental limits, leading directly to pollution and degradation.

✅ Correct Answer Explanation

When human activity generates more waste ($W$) than the environment's natural absorptive capacity ($AC$) can process, the excess pollution cannot be broken down. This surplus accumulates in air, land, and water systems. This represents a direct breach of natural ecological boundaries, which degrades environmental quality and drives systemic crises.

❓ Why Other Options Are Incorrect

Option A → Incorrect because overloading an ecosystem with waste strains and damages its carrying capacity; it never increases it.
Option B → Incorrect because natural breakdown processes do not instantly drop to zero, though they do become overwhelmed and less effective.
Option C → Incorrect because generating more waste than nature can handle is the exact opposite of sustainable development.

🎯 Strategy

Used: Dimensional/Unit Analysis

Application: Look at the inequality mathematically: $Output\ (W) > Limit\ (AC)$. This imbalance means the safety threshold has been crossed, leading to a negative impact. Final Logic: Crossing this threshold points directly to a breach of environmental limits and subsequent degradation.

🧠 Memory Trick

Waste > Absorptive Capacity = Boundary Breached & Degradation Begins.

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Carrying Capacity Conditions

20 Arrange the stages of losing the balance of demand:
1. Extinction of resources
2. Population explosion and industrialization
3. Environmental crisis
4. Demand for resources exceeds regeneration

A 1, 2, 3, 4

B 4, 3, 2, 1

C 2, 4, 1, 3

D 3, 1, 4, 2

💡 Short Explanation

The process begins with social and economic changes (population growth/industrialization). This expansion causes resource demand to outpace natural regeneration rates. This imbalance leads to the permanent loss and extinction of vulnerable resources. The end result of this chain reaction is a widespread environmental crisis.

✅ Correct Answer Explanation

To model the timeline of ecological imbalance accurately: 1. The historical trigger comes from social shifts: Population explosion and industrialization (2). 2. This growth drives up consumption, meaning Demand for resources exceeds regeneration (4). 3. Overusing these assets leads to severe scarcity and the Extinction of resources (1). 4. This widespread resource loss and ecological damage culminates in an Environmental crisis (3). This sequence flows logically as 2, 4, 1, 3, which matches Option C.

❓ Why Other Options Are Incorrect

Option A → Incorrect because resource extinction (1) is a result of prolonged over-exploitation, so it cannot happen before industrialization (2) begins.
Option B → Incorrect because it reverses the timeline, putting the final environmental crisis (3) before the industrial growth that causes it.
Option D → Incorrect because it starts with the final crisis (3), failing to establish the correct cause-and-effect chain.

🎯 Strategy

Used: Elimination

Application: Identify the clear starting trigger and final outcome. Industrialization (2) is the initial driver, and the environmental crisis (3) is the ultimate result. Final Logic: Option C is the only choice that starts with step 2 and ends with step 3, making it the correct sequence.

🧠 Memory Trick

Growth (2) > High Demand (4) > Resource Loss (1) > Final Crisis (3).

📚 Class XII – Indian Economic Development – Chapter: Sustainable Economic Development – Topic: Evolution of Environmental Crisis

CUET UG Economics Booster Test 2 - Environment and Its Functions

Test Complete!

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