CUET UG Biology Booster Test 2-Biodiversity Patterns and Richness -

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CUET UG Biology Booster Test 2-Biodiversity Patterns and Richness

⏱️ 30 Minutes

❓ 20 Questions

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

CUET UG Biology Booster Test 2-Biodiversity Patterns and Richness

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QUESTION 1 OF 20

India comprises only 2.4% of the world's land area but possesses 8.1% of global species diversity. This disparity signifies that India:

Answer Review

1 India comprises only 2.4% of the world's land area but possesses 8.1% of global species diversity. This disparity signifies that India:

A Has predominantly temperate latitudes with low speciation.

B Requires a much larger landmass to sustain its current species.

C Suffers from a flawed inventory system where animals are counted twice.

D Holds an unusually high concentration of global biodiversity relative to its size.

💡 Short Explanation

India's species richness (8.1%) significantly outweighs its geographic area (2.4%). This disproportionate richness is a hallmark of "mega-diversity" nations. It highlights India as a critical global conservation site.

✅ Correct Answer Explanation

India is globally recognized as one of the 12 mega-diversity countries because its species diversity is remarkably high compared to its total land mass. This "disparity" is the definition of a biodiversity hotspot/mega-diversity region. Option B accurately interprets this statistical relationship as a sign of high concentration.

❓ Why Other Options Are Incorrect

Option A → India is primarily tropical/subtropical, and its richness is high, not low.
Option C → The statistics represent verified ecological diversity, not inventory errors.
Option D → The current biodiversity is successfully sustained within its existing landmass.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: Comparing the percentage values provided to understand the "disparity" mentioned in the stem.

Final Logic: A higher species percentage than land percentage indicates higher biodiversity density.

🧠 Memory Trick

"Land < Species = Mega-Diversity."

📚 Biodiversity and Conservation – Topic: Biodiversity in India

2 Evaluate the following statements:
I. India's share of the global species diversity makes it one of the 12 mega diversity countries.
II. If Robert May's global estimates are accurate, there are over 1,00,000 plant species yet to be discovered in India.

A Only I is correct

B Only II is correct

C Neither I nor II is correct

D Both I and II are correct

💡 Short Explanation

India is officially one of the 12 mega-diversity countries. NCERT notes that based on May's global estimate, over 1,00,000 plants and 3,00,000 animal species are yet to be discovered in India.

✅ Correct Answer Explanation

Statement I is a fundamental fact of Indian biodiversity. Statement II is derived from the standard estimates mentioned in the NCERT text regarding the gap between recorded species and estimated biodiversity. Both statements are factually accurate within the context of the chapter.

❓ Why Other Options Are Incorrect

Option A → Both statements are correct, not just I.
Option B → Both statements are correct, not just II.
Option C → Both statements are objectively true per NCERT data.

🎯 Strategy

Used: Substitution

Application: Verifying the accuracy of each independent statement against NCERT facts.

Final Logic: Both claims are directly supported by the textbook's biodiversity figures.

🧠 Memory Trick

"12 Mega, 1L Plants (UndiscovereD)."

📚 Biodiversity and Conservation – Topic: Biodiversity in India

3 Which of the following is NOT a logical consequence or fact related to India's status as a mega diversity country?

A It possesses nearly 45,000 recorded plant species.

B It faces a challenging task to catalog all undocumented species due to immense manpower requirements.

C It has successfully discovered and named all its endemic animal species.

D It risks losing a large fraction of undiscovered species to extinction.

💡 Short Explanation

A large number of species are still "undocumented" (undiscovered). It is impossible to have named "all" endemic animal species. This makes Option C the incorrect (not true) statement.

✅ Correct Answer Explanation

NCERT explicitly mentions that a vast number of species remain undiscovered or unnamed in India. Therefore, the claim that we have "successfully discovered and named all" species is factually incorrect and logically impossible given current estimates.

❓ Why Other Options Are Incorrect

Option A → 45,000 plants is a cited figure.
Option B → Cataloging undiscovered species is indeed a massive task.
Option D → Extinction of undiscovered species is a major conservation concern.

🎯 Strategy

Used: Extreme Word Filter

Application: Filtering the absolute term "all" in "discovered and named all its endemic animal species."

Final Logic: Science is an ongoing process; "all" species are never discovered.

🧠 Memory Trick

"All = Impossible."

📚 Biodiversity and Conservation – Topic: Biodiversity in India

4 Match the global and Indian biodiversity statistics logically:

Column 1	Column 2
(1) India's recorded animal species	a) ~90,000
(2) India's recorded plant species	b) 45,000
(3) Global species estimate (Robert May)	c) > 70 per cent
(4) Animal proportion of global recorded species	d) 7 million

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

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

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

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

💡 Short Explanation

1 (Animals) = ~90,000 (A). 2 (Plants) = 45,000 (B). 3 (Global Estimate) = 7 million (D). 4 (Animal Proportion) = >70% (C).

✅ Correct Answer Explanation

This question tests the core numerical data points provided in the Biodiversity chapter. Matching 1-a, 2-b, 3-d, and 4-c aligns correctly with the statistics cited in the NCERT biodiversity tables.

❓ Why Other Options Are Incorrect

Options B, C, D → These options misalign the statistics (e.g., swapping plant/animal figures or using incorrect estimates).

🎯 Strategy

Used: Substitution

Application: Cross-referencing each statistic with the standard textbook data.

Final Logic: Systematic verification of four distinct data points.

🧠 Memory Trick

"Plants 45k, Animals 90k, Global 7M."

📚 Biodiversity and Conservation – Topic: Biodiversity in India/Global

5 Based on the latitudinal gradient hypothesis, arrange the following environments from lowest expected vascular plant species richness to highest:
1. A forest area in the Midwest USA,
2. A forest area in Ecuador,
3. A landmass in Greenland

A 1 -> 2 -> 3

B 3 -> 1 -> 2

C 2 -> 1 -> 3

D 3 -> 2 -> 1

💡 Short Explanation

Greenland (Pole) = Lowest richness (3). Midwest USA (Temperate) = Intermediate richness (1). Ecuador (Equator/Tropical) = Highest richness (2).

✅ Correct Answer Explanation

The latitudinal gradient hypothesis states that species richness is highest in the tropics (Ecuador) and decreases toward the poles (Greenland). Midwest USA acts as a temperate zone (mid-latitude). Thus, the order of lowest to highest is Greenland -> Midwest USA -> Ecuador.

❓ Why Other Options Are Incorrect

Options B, C, D → These fail to follow the expected gradient of increasing diversity from pole to equator.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: Sorting the locations by their latitudinal position relative to the equator.

Final Logic: Distance from equator is inversely related to species richness.

🧠 Memory Trick

"Pole (Low) -> Mid -> Equator (High)."

📚 Biodiversity and Conservation – Topic: Latitudinal Gradients

6 The latitudinal gradient in biodiversity implies that moving from the equator (0°) to 41° N (e.g., New York) would typically result in:

A An evolutionary transition from animals to plants

B A sharp decrease in the number of bird species from around 1400 to 105

C Increased niche specialisation due to harsher climates

D No observable change in species richness

💡 Short Explanation

Equator (Colombia) has ~1,400 bird species. 41° N (New York) has ~105 bird species. This represents the decrease predicted by the latitudinal gradient.

✅ Correct Answer Explanation

The textbook uses Colombia and New York as primary case studies for the latitudinal gradient. The bird counts (1,400 vs 105) clearly show the drastic reduction in species richness as one moves away from the tropical equator toward temperate latitudes.

❓ Why Other Options Are Incorrect

Option A → This is not an evolutionary principle of gradients.
Option C → Harsher climates generally reduce biodiversity, not increase niche specialization of this magnitude.
Option D → There is a very observable and significant change.

🎯 Strategy

Used: Substitution

Application: Recalling the specific data points used for the latitudinal gradient comparison.

Final Logic: The gradient is quantitatively verified by the drop in bird counts from tropics to temperate.

🧠 Memory Trick

"Tropical 1400, Temperate 105."

📚 Biodiversity and Conservation – Topic: Latitudinal Gradients

7 Which of the following does NOT serve as an explanatory reason for Colombia having nearly 1,400 species of birds?

A Its location near the equator.

B Its relatively undisturbed evolutionary history.

C Its highly seasonal and unpredictable environmental conditions.

D Its high receipt of solar energy contributing to productivity.

💡 Short Explanation

Tropical environments are stable, not unpredictable. Seasonality is low, not high. Unpredictability hinders, rather than promotes, high biodiversity.

✅ Correct Answer Explanation

Colombia's high bird diversity is attributed to its equatorial location, long stable history, and high solar productivity—all features of tropical stability. Option C is the correct answer because it describes conditions (seasonality and unpredictability) that characterize temperate regions, not tropical ones.

❓ Why Other Options Are Incorrect

Options A, B, D → These are the canonical reasons for tropical biodiversity provided in the text.

🎯 Strategy

Used: Elimination

Application: Identifying the description that contradicts tropical ecological stability.

Final Logic: Tropical = Stable/Constant; Temperate = Unpredictable/Seasonal.

🧠 Memory Trick

"Tropics = Stable; Temperate = Variable."

📚 Biodiversity and Conservation – Topic: Tropical Richness Hypotheses

8 Match the latitude coordinates to their corresponding locations and avian diversity:

List I	List II
1. 71° N	A. Tropics (harbours most species)
2. 41° N	B. 1,400 species
3. 23.5° N to 23.5° S	C. New York (105 species)
4. Near equator (Colombia)	D. Greenland (56 species)

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

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

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

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

💡 Short Explanation

1 (71° N) = Greenland (56 species) (D). 2 (41° N) = New York (105 species) (C). 3 (Tropics) = Most species (A). 4 (Colombia) = 1,400 species (B).

✅ Correct Answer Explanation

This matches the standard geographic references used in the biodiversity chapter. 71°N is Greenland (the pole), 41°N is New York, the tropics hold the most diversity, and Colombia is the specific equatorial example with 1,400 species.

❓ Why Other Options Are Incorrect

Options B, C, D → The coordinates and species counts are mismatched.

🎯 Strategy

Used: Substitution

Application: Using the geographical and avian count data from the text to match the pairs.

Final Logic: Sequential matching of latitudes to their locations and bird counts.

🧠 Memory Trick

"Greenland = 56; New York = 105."

📚 Biodiversity and Conservation – Topic: Latitudinal Gradients

📄 Passage

"Ecologists and evolutionary biologists have proposed various hypotheses; some important ones are (A) Speciation is generally a function of time, unlike temperate regions subjected to frequent glaciations in the past, tropical latitudes have remained relatively undisturbed..."

What does the hypothesis "speciation is a function of time" imply in the context of tropical richness?

A Speciation happens rapidly regardless of historical events.

B Tropical species have shorter lifespans, creating rapid turnover.

C Glaciations act as a catalyst to speed up speciation in the tropics.

D Longer, uninterrupted evolutionary periods allow for greater species accumulation.

💡 Short Explanation

Tropics have had millions of years of stability. Stability = Time for species to evolve and diversify. This allows more species to "accumulate" over time.

✅ Correct Answer Explanation

The "time" hypothesis suggests that the tropics have remained relatively undisturbed by events like glaciations that affected temperate zones. This lack of disturbance gives species a longer, uninterrupted evolutionary window to diversify and accumulate, explaining the high richness.

❓ Why Other Options Are Incorrect

Option A → Historical events like glaciations are central to the theory.
Option B → The theory is about accumulated diversity over evolutionary time, not individual lifespan.
Option C → Glaciations are disturbances that hinder diversification.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: Explaining the logical implication of the phrase "function of time" from the passage.

Final Logic: Time = Accumulation of diversity.

🧠 Memory Trick

"Time = Opportunity for Diversity."

📚 Biodiversity and Conservation – Topic: Tropical Richness Hypotheses

📄 Passage

The relative lack of disturbance in tropical latitudes over millions of years has primarily resulted in:

A The extinction of older species

B A long evolutionary time for species diversification

C Higher frequencies of mass extinctions

D Complete environmental predictability without biological competition

💡 Short Explanation

Lack of disturbance = Stability. Stability = Time for evolution. Evolution = Diversification.

✅ Correct Answer Explanation

The passage highlights that tropical latitudes remained undisturbed, which acted as a direct enabler for long-term evolutionary diversification. This is the core argument for why tropical regions harbor more species compared to temperate zones that faced frequent disturbances.

❓ Why Other Options Are Incorrect

Option A → Stability generally favors persistence, not extinction.
Option C → Disturbance is usually associated with extinction, not stability.
Option D → Biological competition exists in all stable ecosystems.

🎯 Strategy

Used: Elimination

Application: Selecting the positive evolutionary outcome of tropical stability.

Final Logic: Lack of disturbance -> Time for evolution -> High diversity.

🧠 Memory Trick

"Stability = Evolutionary Time."

📚 Biodiversity and Conservation – Topic: Tropical Richness Hypotheses

11 Which characteristic is NOT historically applied to temperate environments when comparing their biodiversity to tropical ones?

A They are more seasonal.

B They are relatively less constant and unpredictable.

C They promote high levels of niche specialisation.

D They were subjected to frequent glaciations in the past.

💡 Short Explanation

Tropical environments are stable, promoting high niche specialization. Temperate regions are seasonal and disturbed. Niche specialization is a feature of tropical, not temperate, ecosystems.

✅ Correct Answer Explanation

Tropical environments, due to their long-term stability, promote intricate niche specialization, allowing more species to coexist. Temperate environments, being more seasonal and subjected to frequent historical glaciations, are less likely to support the same degree of specialized niche partitioning.

❓ Why Other Options Are Incorrect

Option A → Temperate regions are indeed characterized by higher seasonality.
Option B → Temperate regions are less constant and more unpredictable than the tropics.
Option D → Temperate regions did experience frequent glaciations in the past, unlike the tropics.

🎯 Strategy

Used: Elimination

Application: Identifying the statement that inaccurately attributes a "tropical" trait (niche specialization) to "temperate" environments.

Final Logic: Tropical stability is the key factor driving specialization.

🧠 Memory Trick

"Tropical = Specialized; Temperate = Seasonal."

📚 Class XII – Biology – Chapter: Biodiversity and Conservation – Topic: Environmental Stability

12 Arrange the causal sequence explaining how environmental stability leads to biodiversity in the tropics:
1. Greater species diversity,
2. Constant and predictable environment,
3. Promotion of niche specialisation.

A 3 -> 2 -> 1

B 1 -> 2 -> 3

C 2 -> 3 -> 1

D 2 -> 1 -> 3

💡 Short Explanation

Stability (2) is the base environment. Stability allows for specialization (3). Specialization leads to higher species diversity (1).

✅ Correct Answer Explanation

The causal link described in ecology is that constant and predictable environments (2) allow organisms to specialize into distinct niches (3), which reduces competition and ultimately results in greater species diversity (1).

❓ Why Other Options Are Incorrect

Options A, B, D → These do not follow the correct logical progression from cause (environment) to mechanism (specialization) to effect (diversity).

🎯 Strategy

Used: Option Grouping

Application: Grouping the process into cause-effect links.

Final Logic: Environment -> Mechanism -> Outcome.

🧠 Memory Trick

"Environment -> Niche -> Diversity."

📚 Class XII – Biology – Chapter: Biodiversity and Conservation – Topic: Environmental Stability

13 How does the angle and availability of solar incidence in the tropics logically affect its biodiversity?

A It increases speciation directly through mutation.

B It drives higher biological productivity, which indirectly supports greater diversity.

C It limits the growth of plants, reducing competition.

D It causes glaciations to melt faster, creating aquatic habitats.

💡 Short Explanation

Tropics receive more direct solar energy. Higher energy = Higher primary productivity. Productivity supports more varied food webs/species.

✅ Correct Answer Explanation

Higher solar energy influx in the tropics increases primary productivity (photosynthesis). This increased biomass and energy availability can support more complex trophic structures and higher species diversity.

❓ Why Other Options Are Incorrect

Option A → Solar energy is not a direct mutagen.
Option C → Tropics are known for high plant growth, not limits.
Option D → Tropical biodiversity is not primarily about melting glaciations.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: Relating solar energy to its ecological impact on productivity.

Final Logic: Energy -> Productivity -> Diversity.

🧠 Memory Trick

"Solar = Productivity = Diversity."

📚 Class XII – Biology – Chapter: Biodiversity and Conservation – Topic: Solar Energy Productivity

14 Examine the following statements on productivity:
I. Solar energy directly and independently creates new species out of existing biomass.
II. Higher productivity, fueled by solar energy, might contribute indirectly to greater species diversity.

A Only I is correct

B Neither I nor II is correct

C Both I and II are correct

D Only II is correct

💡 Short Explanation

Solar energy is a driver of productivity, not a magical creator of species (Statement I false). Productivity supports ecosystems that allow for higher diversity (Statement II true).

✅ Correct Answer Explanation

Statement I is incorrect because solar energy does not "create" species; it powers the primary production that supports them. Statement II is correct as it accurately describes the indirect relationship between productivity and species diversity.

❓ Why Other Options Are Incorrect

Option A → Statement I is false.
Option B → Statement II is true.
Option C → Both cannot be correct because Statement I is false.

🎯 Strategy

Used: Elimination

Application: Removing the statement that treats energy as a biological creator.

Final Logic: Energy fuels biomass; it doesn't synthesize organisms.

🧠 Memory Trick

"Sun powers, doesn't build."

📚 Class XII – Biology – Chapter: Biodiversity and Conservation – Topic: Solar Energy Productivity

15 Which of the following is NOT an accurate statistic reflecting the massive biodiversity of the Amazon rain forest?

A It is home to exactly two million documented invertebrate species.

B It contains more than 40,000 species of plants.

C It has 427 species of mammals.

D It supports 3,000 species of fishes.

💡 Short Explanation

Two million is a global estimate of discovered species, not a specific Amazon-only count. The other stats (40k plants, 427 mammals, 3,000 fishes) are correct Amazon stats.

✅ Correct Answer Explanation

The statistic about "two million documented invertebrate species" is incorrect in the context of the Amazon, as the NCERT does not provide this specific figure for the Amazon. The other statistics provided match the textbook's descriptions.

❓ Why Other Options Are Incorrect

Options B, C, D → All of these figures accurately match the data provided in the biodiversity chapter for the Amazon.

🎯 Strategy

Used: Substitution

Application: Verifying the numeric facts against the provided curriculum data.

Final Logic: If one number is out of scope/incorrect, it is the answer.

🧠 Memory Trick

"Amazon = Plants 40k, Mammals 427, Fish 3000."

📚 Class XII – Biology – Chapter: Biodiversity and Conservation – Topic: Amazon Rain Forest

16 In the Amazon rainforest, the documented number of mammal species (427) is exactly equal to the number of species of which other taxonomic group?

A Birds

B Reptiles

C Amphibians

D Fishes

💡 Short Explanation

According to the NCERT table, mammals (427) and amphibians (427) share the same number of documented species. This is a specific recall question.

✅ Correct Answer Explanation

The NCERT biodiversity table for the Amazon specifically lists mammals as 427 and amphibians as 427, making them equal in the documented counts provided.

❓ Why Other Options Are Incorrect

Options A, B, D → These groups have different documented species counts in the Amazon table.

🎯 Strategy

Used: Substitution

Application: Recalling the specific data values from the textbook table.

Final Logic: Direct recall of matching data points.

🧠 Memory Trick

"Mammal = Amphibian = 427."

📚 Class XII – Biology – Chapter: Biodiversity and Conservation – Topic: Amazon Rain Forest

17 What does the "limit" refer to in Alexander von Humboldt's observation of species-area relationships?

A The point beyond which exploring a larger area no longer yields an increase in newly discovered species richness.

B The boundary where the forest turns into a desert.

C The maximum number of species a single taxonomist can name.

D The point where rectangular hyperbolas become sigmoid curves.

💡 Short Explanation

Observation: Richness increases with area. The "limit" describes the asymptote or saturation point. It is not indefinite growth.

✅ Correct Answer Explanation

The "limit" refers to the saturation point where adding more area no longer results in a significant increase in observed species richness, which is a core concept in the species-area relationship.

❓ Why Other Options Are Incorrect

Option B → This is geographical, not ecological.
Option C → Taxonomy is not the primary limiting factor here.
Option D → The relationship follows a rectangular hyperbola (or log-linear), not a conversion to sigmoid.

🎯 Strategy

Used: Elimination

Application: Discarding options that relate to geography or human activity rather than ecological dynamics.

Final Logic: Limit = Saturation point.

🧠 Memory Trick

"Limit = Saturation."

📚 Class XII – Biology – Chapter: Biodiversity and Conservation – Topic: Species-Area Relationship

18 While the relationship between species richness and area is a rectangular hyperbola on a normal scale, on a logarithmic scale it transforms into a:

A Rectangular hyperbola

B Parabolic curve

C S-shaped growth curve

D Straight line defined by log S = log C + Z log A

💡 Short Explanation

Normal scale: Hyperbola. Log scale: Linear regression (log S = log C + Z log A). This is the mathematical basis for the species-area model.

✅ Correct Answer Explanation

The equation S = CAᶻ describes a hyperbola. When you take the logarithm of both sides, it becomes log S = log C + Z log A, which is the equation for a straight line on a graph where both axes are logarithmic.

❓ Why Other Options Are Incorrect

Option A → This describes the normal scale.
Option B → Parabolic is incorrect.
Option C → S-shaped curves (sigmoids) refer to different growth models.

🎯 Strategy

Used: Substitution

Application: Recalling the mathematical transformation of the species-area power law.

Final Logic: Log transformation linearizes the power law.

🧠 Memory Trick

"Log = Line."

📚 Class XII – Biology – Chapter: Biodiversity and Conservation – Topic: Species-Area Relationship

19 If an ecologist calculates a 'Z' value of 0.15 for the species-area relationship of birds in California, what can be deduced about the scale of the area studied?

A It represents an exceptionally large area, like an entire continent.

B It represents a smaller, regional area.

C It indicates that the region has been frequently glaciated.

D It implies that birds are completely extinct in that area.

💡 Short Explanation

Z values (0.1–0.2) represent small/regional areas. Z values (0.6–1.2) represent large/continental areas. 0.15 is in the regional range.

✅ Correct Answer Explanation

Research indicates that the regression coefficient (Z-value) is scale-dependent. A Z-value between 0.1 and 0.2 is characteristic of small, localized, or regional areas, whereas larger continental scales yield higher Z-values.

❓ Why Other Options Are Incorrect

Option A → Continents have higher Z-values.
Option C → Glaciation history is not directly deduced from the Z-value.
Option D → Z-value relates to species richness distribution, not extinction status.

🎯 Strategy

Used: Substitution

Application: Applying the known scale thresholds for Z-values.

Final Logic: Z=0.15 falls within the 0.1–0.2 "regional" range.

🧠 Memory Trick

"Small Z (0.1-0.2) = Regional; Big Z (0.6-1.2) = Continent."

📚 Class XII – Biology – Chapter: Biodiversity and Conservation – Topic: Regression Coefficients

20 A steeper slope (Z value of 1.15) for frugivorous birds across tropical forests of different continents implies that:

A The rate of encountering new species increases much more rapidly with area on a continental scale compared to a regional scale.

B Species richness decreases as area increases.

C Frugivorous birds only exist in small, restricted habitats.

D The rectangular hyperbola relationship does not apply to birds.

💡 Short Explanation

Steeper slope = Higher Z value. Higher Z value (1.15) = Large-scale/Continental study. This reflects high species accumulation rates across large areas.

✅ Correct Answer Explanation

A high Z-value (steep slope) indicates that as you increase the study area to a continental scale, you encounter new, unique species at a much higher rate because large, distinct geographical areas hold more diverse sets of species compared to smaller, regional patches.

❓ Why Other Options Are Incorrect

Option B → Richness always increases (or stays constant) with area; it doesn't decrease.
Option C → Frugivorous birds are globally distributed, not limited to tiny patches.
Option D → The species-area model is universally applied to taxonomic groups like birds.

🎯 Strategy

Used: Contextual/Tonal Matching

Application: Interpreting the meaning of the slope in the species-area graph.

Final Logic: Steep slope = High species turnover across large areas.

🧠 Memory Trick

"Steep = Large/Continental."

📚 Class XII – Biology – Chapter: Biodiversity and Conservation – Topic: Regression Coefficients

CUET UG Biology Booster Test 2-Biodiversity Patterns and Richness

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