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Q23 (IAS/2024) Environment & Ecology › Biodiversity & Protected Areas › Biodiversity patterns Official Key

Consider the following pairs : 1. Brazil - Indri 2. Indonesia - Elk 3. Madagascar - Bonobo How many of the pairs given above are correctly matched ?

Result
Your answer:  ·  Correct: D
Explanation

The correct answer is option D (None of the pairs are correctly matched).

Let me explain why each pairing is incorrect:

**Pair 1 (Brazil - Indri):** The Indri is actually a lemur species that is endemic to Madagascar, not Brazil. Brazil is second only to Indonesia as the country with the most endemic species[2], but the Indri is not among them—it is found exclusively in Madagascar's rainforests.

**Pair 2 (Indonesia - Elk):** Elk (also known as wapiti) are large deer species native to North America and parts of East Asia, not Indonesia. Indonesia is known for its tropical biodiversity including orangutans, Komodo dragons, and various endemic bird species, but not elk.

**Pair 3 (Madagascar - Bonobo):** Bonobos (Pan paniscus) are great apes endemic to the Democratic Republic of Congo in Central Africa, not Madagascar. Madagascar is famous for its lemurs, fossas, and unique biodiversity, but has no native great apes.

Since none of the three animal-country pairs are correctly matched, the answer is "None."

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Q. Consider the following pairs : 1. Brazil - Indri 2. Indonesia - Elk 3. Madagascar - Bonobo How many of the pairs given above are correc…
At a glance
Origin: Mixed / unclear origin Fairness: Low / Borderline fairness Books / CA: 0/10 · 0/10

This is a classic 'Biogeographic Sense' question disguised as a trivia quiz. You aren't expected to memorize every animal in Brazil, but you MUST know the fundamental rules of global ecology: Lemurs are strictly Old World (Madagascar), and Great Apes (Bonobos) are strictly Mainland Africa/Asia, never on islands like Madagascar.

How this question is built

This question can be broken into the following sub-statements. Tap a statement sentence to jump into its detailed analysis.

Statement 1
Is the indri (a lemur species) native to Brazil?
Origin: Weak / unclear Fairness: Borderline / guessy
Indirect textbook clues
Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 7: Tectonics > Distribution of Fossils > p. 97
Strength: 5/5
“• The observations that Lemurs occur in India, Madagascar and Africa led some to consider a contiguous landmass "Lemuria" linking these three landmasses. Mesosaurus was a small reptile adapted to shallow brackish water. The skeletons of these are found only in South Africa and Brazil. The two localities presently are 4,800 km apart with an ocean in between them.• Criticism: Similar fossils were identified in unrelated parts of the world.”
Why relevant

Gives a geographic pattern for lemurs: 'Lemurs occur in India, Madagascar and Africa', implying their usual ranges are Old World landmasses rather than South America.

How to extend

A student could compare this pattern with a world map to see whether Brazil (in South America) fits those listed regions and thus judge whether lemurs are likely native to Brazil.

FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 3: Interior of the Earth > Distribution of Fossils > p. 28
Strength: 5/5
“When identical species of plants and animals adapted to living on land or in fresh water are found on either side of the marine barriers, a problem arises regarding accounting for such distribution. The observations that Lemurs occur in India, Madagascar and Africa led some to consider a contiguous landmass 'Lemuria' linking these three landmasses. Mesosaurus was a small reptile adapted to shallow brackish water. The skeletons of these are found only in two localities: the Southern Cape province of South Africa and Iraver formations of Brazil. The two localities are presently 4,800 km apart with an ocean in between them.”
Why relevant

Repeats the observation that lemurs occur in India, Madagascar and Africa and places such distributions in the context of historical continental connections (Lemuria).

How to extend

Use basic palaeogeography (locations of Madagascar/Africa/India) to infer that lemurs are associated with those landmasses, not with South America/Brazil.

FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 14: Biodiversity and Conservation > CONSERVATION OF BIODIVERSITY > p. 118
Strength: 3/5
“Details of these biosphere reserves are given in the book India: Physical Environment (NCERT, 2006). There are some countries which are situated in the tropical region; they possess a large number of the world's species diversity. They are called mega diversity centres. There are 12 such countries, namely Mexico, Columbia, Ecuador, Peru, Brazil, Democratic Republic of Congo, Madagascar, China, India, Malaysia, Indonesia and Australia in which these centres are located. In order to concentrate resources on those areas that are most vulnerable, the International Union for the Conservation of Nature and Natural Resources (IUCN) has identified certain areas as biodiversity hotspots (Figure 14.1).”
Why relevant

Lists Brazil among global 'mega diversity' countries, indicating Brazil has many endemic species and distinct faunas.

How to extend

A student could use this to reason that if Brazil were home to lemurs, the country’s biodiversity lists would specifically include lemur taxa; absence of lemurs from the cited lemur distribution hints they are unlikely native to Brazil.

CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025) > Chapter 5: Natural Vegetation and Wildlife > Tropical Evergreen Forests > p. 40
Strength: 2/5
“Some of the commercially important trees of this forest are ebony, mahogany, rosewood, rubber and cinchona. The common animals found in these forests are elephant, monkey, lemur and deer. Onehorned rhinoceroses are found in the jungles of Assam and West Bengal. Besides these animals, plenty of birds, bats, sloth, scorpions and snails are also found in these jungles.”
Why relevant

Mentions 'lemur' in a general list of animals in tropical evergreen forests (from a textbook section on India), illustrating that common-fauna lists may include species names but require checking geographic context.

How to extend

A student should verify the regional focus of such lists (here India) and then check whether that regional focus overlaps Brazil; this warns against assuming a species named in a generic biome list is globally distributed.

Statement 2
Is the elk (a cervid species) native to Indonesia?
Origin: Weak / unclear Fairness: Borderline / guessy
Indirect textbook clues
Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Mesta (Hibicus sabdarifa) > p. 51
Strength: 4/5
“Te fber of mesta is obtained from stems of kenaf and roselle. Tere are about 400 species under the Hibiscus distributed in the tropical and subtropical regions of the world, of which 36 species had been observed in India, Pakistan, Bangladesh Sri Lanka and Myanmar. Tropical Africa appears to be a major centre of diversity for mesta crop. Te major mesta-growing countries are India, China, Tailand, Malaysia, Indonesia, Philippines, Egypt, Sudan, Brazil and Australia. In India, the area under mesta at present, is around 0.15 million ha. Of which more than 90-95% is under roselle. Te average annual production is around 0.84 million bales.”
Why relevant

Lists Indonesia among tropical/subtropical countries for crops (mesta), indicating Indonesia is a tropical country/region.

How to extend

A student could combine this with a world map and known climate‑preferences of elk (typically temperate/boreal) to suspect elk are unlikely native to tropical Indonesia.

Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Rubber (Hevea brasiliensis) > p. 48
Strength: 4/5
“Rubber is the latex obtained from the rubber tree. It is a kind of natural plastic with many invaluable qualities such as elasticity. It is the native of the Amazonian rain forests. From Brazil it was difused to Indonesia, Laos, Malaysia, Myanmar, Philippines, Tailand, and Vietnam. Rubber tree requires hot and humid climate. It grows well in temperature conditions between 21°- 27°C. Temperature below 21°C is injurious to the growth of rubber trees. A rainfall over 250 cm, well distributed throughout the year is conducive for rubber plantation. Long droughts are harmful to the plant. Rubber grows well on well-drained loamy soils, rich in iron and ammonia.”
Why relevant

Shows that species/crops such as rubber were diffused from Brazil to Indonesia and that Indonesia has a hot, humid tropical climate requirement.

How to extend

Use the climate implication (hot, humid, tropical) against the typical habitats of many elk species (often cooler temperate zones) to judge plausibility of elk being native there.

Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Herbivorous > p. 82
Strength: 3/5
“Elephants, rhinocerous, deers-musk-deer, bara-singha, dancing-deer (sambhar), thamin and Kashmiristag, antelopes (black-buck, four-horned antelope or chausingha, Indian-gazelle, chinkara, blue-cownilgai, bison, wild-bufalo, Himalayan-ibex or wild-goat, wild-boar, wild-ass, Nilgiri-tahr.”
Why relevant

Provides a list of herbivorous mammals (elephants, rhinoceros, various deer and antelopes) and the specific deer/antelopes found regionally in South Asia.

How to extend

Compare the named regional deer species with a checklist of cervids: if elk is not listed among regional deer in nearby South/Southeast Asia, a student might infer elk's native range likely lies elsewhere and verify on a distribution map.

Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 4: BIODIVERSITY > x) not evaluated (ne) > p. 16
Strength: 3/5
“• Species: 1. Asian Black Bear (white- chested bear); Region/State/Union Territory: Himalayas • Species: 2. Barasingha (Swamp Deer); Region/State/Union Territory: Northern and Central India • Species: 3. Black-Buck; Region/State/Union Territory: Tar Desert • Species: 4. Clouded Leopard; Region/State/Union Territory: Himalayan Foot-Hills • Species: 5. Chiru (Tibetan Antelope); Region/State/Union Territory: Cold Desert (Himachal Pradesh and Ladakh) • Species: 6. Four Horned Antelope (Chausingha); Region/State/Union Territory: Swampy areas • Species: 7. Gaur/Mithun (Indian Bison); Region/State/Union Territory: Assam, States of North East India Himalayan Tahr Himalayas • Species: 9. Indian Wolf; Region/State/Union Territory: Foot-Hills of Himalayas- extends to the south of the Himalayas Marbled Cat Northern India and North-East India • Species: 11.”
Why relevant

Gives specific deer species and their Indian regional distributions (e.g., Barasingha, Chiru, spotted deer types) but does not include 'elk' among native Indian cervids.

How to extend

A student can note that comprehensive regional lists omit elk and therefore combine this absence with a map of elk distribution to assess whether elk occur naturally in Indonesia.

CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025) > Chapter 5: Natural Vegetation and Wildlife > WILDLIFE > p. 43
Strength: 2/5
“Arid areas of the Rann of Kachchh and the Thar Desert are the habitat for wild ass and camels respectively. Indian bison, nilgai (blue bull), chousingha (four-horned antelope), gazel and different species of deer are some other animals found in India. It also has several species of monkeys. Wildlife Protection Act was implemented in 1972 in India. India is the only country in the world that has both tigers and lions. The natural habitat of the Indian lion is the Gir forest in Gujarat. Tigers are found in the forests of Madhya”
Why relevant

Describes the wildlife of the Indian subcontinent, listing several deer species and emphasising India’s fauna composition without mentioning elk.

How to extend

Use this as an example that South/Southeast Asian wildlife lists typically name local deer species; absence of elk here suggests checking whether elk are native to tropical Asian islands like Indonesia via a species range map.

Statement 3
Is the bonobo (Pan paniscus) native to Madagascar?
Origin: Weak / unclear Fairness: Borderline / guessy
Indirect textbook clues
Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 4: BIODIVERSITY > Africa > p. 8
Strength: 5/5
“4.1).• 17. Te Guinean Forests of Western Africa Te lowland forests of West Africa are the home of more than a quarter of African mammals, including more than 20 species of primates.• 18. Horn of Africa Rich in endemic plants and animals, the arid Horn of Africa (Somalia) has been a renowned source of biological resources for thousands of years.• 19. Madagascar and the Indian Ocean Islands Madagascar and its neighbouring island groups have an astonishing total of eight plant families, four bird families, and fve primate families that live nowhere else in the world (Fig. 4.1).• 20. Maputoland-Podoland-Albany Hotspot Tis biodiversity hotspot stretches along the east coast of southern Africa, below the Great Escarpment, and is an important centre of plant endemism.• 21.”
Why relevant

States that Madagascar and nearby islands have several primate families that live nowhere else, highlighting Madagascar's distinct, endemic primate fauna.

How to extend

A student could use this pattern to infer that primates native to Madagascar are likely endemic groups (e.g., lemurs) and therefore check whether Pan paniscus belongs to those endemic families or to an African mainland group.

Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 2: PLANT AND ANIMAL KINGDOMS > 4. Ethiopian region > p. 13
Strength: 5/5
“Tis faunal region stretches over the greater parts of the continent of Africa, excluding the Mediterranean region. It also covers the adjacent islands like Madagascar. Tis region represents 174 families of vertebrates, 140 genera of mammals, and 294 genera of birds. Te main animals of this region include springbok, jerboa, zebra, gnu, girafe, elephant, ostrich, lions, cheetah, gorilla, chimpanzee, monkey, forest elephants, etc. (Fig. 2.3).”
Why relevant

Defines the 'Ethiopian region' as covering continental Africa and adjacent islands like Madagascar and lists main animals including gorilla and chimpanzee, implying a distinction between typical African mainland apes and Madagascar fauna.

How to extend

A student could compare ranges of named African apes (gorilla, chimpanzee) on a map to Madagascar to assess whether Pan species are found on the island or only on the continent.

Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 7: Tectonics > Distribution of Fossils > p. 97
Strength: 4/5
“• The observations that Lemurs occur in India, Madagascar and Africa led some to consider a contiguous landmass "Lemuria" linking these three landmasses. Mesosaurus was a small reptile adapted to shallow brackish water. The skeletons of these are found only in South Africa and Brazil. The two localities presently are 4,800 km apart with an ocean in between them.• Criticism: Similar fossils were identified in unrelated parts of the world.”
Why relevant

Notes that lemurs occur in India, Madagascar and Africa and that such distributions led to hypotheses of past land connections; this highlights that lemurs (a primate group) are specifically associated with Madagascar in these sources.

How to extend

A student could use the fact that lemurs are emphasized for Madagascar to check whether bonobos are grouped with lemurs or with African apes, suggesting where Pan paniscus is native.

FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 3: Interior of the Earth > Distribution of Fossils > p. 28
Strength: 4/5
“When identical species of plants and animals adapted to living on land or in fresh water are found on either side of the marine barriers, a problem arises regarding accounting for such distribution. The observations that Lemurs occur in India, Madagascar and Africa led some to consider a contiguous landmass 'Lemuria' linking these three landmasses. Mesosaurus was a small reptile adapted to shallow brackish water. The skeletons of these are found only in two localities: the Southern Cape province of South Africa and Iraver formations of Brazil. The two localities are presently 4,800 km apart with an ocean in between them.”
Why relevant

Explains the biogeographic puzzle of identical land/freshwater taxa across oceans and repeats the point that lemurs occur in Madagascar, reinforcing Madagascar's characteristic primate associations.

How to extend

A student could contrast the specially noted lemur distribution with known distributions of the genus Pan to judge if bonobos fit Madagascar's primate pattern or that of African mainland apes.

Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 32: Ocean Movements Ocean Currents And Tides > Southern Indian Ocean Currents > p. 495
Strength: 3/5
“• The general circulation pattern in the southern part of the Indian Ocean is quite similar to that of the southern Atlantic and Pacific oceans. It is less marked by seasonal changes. • The south equatorial current, partly led by the corresponding current of the Pacific Ocean, flows from east to west. It splits into two branches, one flowing to the east of Madagascar known as Agulhas current and the other between Mozambique and the Western Madagascar coast known as Mozambique current.• At the southern tip of Madagascar, these two branches mix and are commonly called the Agulhas current. It continues to be a warm current, till it merges with the West Wind Drift.• The West Wind Drift, flowing across the ocean in the higher latitudes from west to east, reaches the southern tip of the west coast, of Australia.”
Why relevant

Describes ocean current branches around Madagascar and between Madagascar and Mozambique, emphasizing Madagascar's maritime separation from mainland Africa.

How to extend

A student could use basic geography (a map and ocean barriers) to reason about whether a large terrestrial ape species would naturally occur on Madagascar without human-mediated introduction.

Pattern takeaway: UPSC has shifted from asking 'Is it Endangered?' to 'Does it belong here?'. They are testing your mental map of the world's ecological history (e.g., why Madagascar has no apes). If a species is evolutionarily distinct (like Bonobo or Indri), its geography is fair game.
How you should have studied
  1. [THE VERDICT]: Conceptual Trap. It looks like a 'Random Species' bouncer, but it is solvable using NCERT Class XI Geography principles (Continental Drift & Lemuria).
  2. [THE CONCEPTUAL TRIGGER]: Biogeographic Realms. The fundamental difference between Neotropical (Brazil), Afrotropical (Congo/Madagascar), and Indomalayan (Indonesia) faunas.
  3. [THE HORIZONTAL EXPANSION]: Memorize the 'Flagship Endemics': Madagascar (Indri, Fossa, Aye-Aye, Tenrec); Congo Basin (Bonobo, Okapi, Grauer’s Gorilla); Indonesia (Orangutan, Komodo Dragon, Babirusa, Anoa); Brazil (Golden Lion Tamarin, Jaguar, Capybara).
  4. [THE STRATEGIC METACOGNITION]: Stop memorizing IUCN lists blindly. Instead, map animal 'Families' to 'Continents'. Ask: 'Are Lemurs found in South America?' (No, only Madagascar/Comoros). 'Are Elk tropical?' (No, they are Temperate/Boreal).
Concept hooks from this question
📌 Adjacent topic to master
S1
👉 Geographic distribution of lemurs
💡 The insight

Lemurs are associated with India, Madagascar and Africa rather than South America, so knowing lemur ranges is essential to judge if an indri could be native to Brazil.

High-yield for questions on species nativity and biogeography; links directly to conservation, endemic species and distribution patterns in GS Paper I/III. Mastering this helps answer nativity/endemism questions and compare faunal realms.

📚 Reading List :
  • FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 3: Interior of the Earth > Distribution of Fossils > p. 28
  • Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 7: Tectonics > Distribution of Fossils > p. 97
  • CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025) > Chapter 5: Natural Vegetation and Wildlife > Tropical Evergreen Forests > p. 40
🔗 Anchor: "Is the indri (a lemur species) native to Brazil?"
📌 Adjacent topic to master
S1
👉 Biodiversity hotspots and endemism (Madagascar vs Brazil)
💡 The insight

Madagascar and Brazil are both listed as megadiversity centres but host different endemic faunas; distinguishing hotspots clarifies whether a given species is likely native to Brazil.

Crucial for questions on hotspots, conservation priorities and species protection policies; connects biodiversity facts to international conventions and national conservation planning.

📚 Reading List :
  • FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 14: Biodiversity and Conservation > CONSERVATION OF BIODIVERSITY > p. 118
  • Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 4: BIODIVERSITY > south America > p. 7
🔗 Anchor: "Is the indri (a lemur species) native to Brazil?"
📌 Adjacent topic to master
S1
👉 Historical biogeography and landmass connections (Lemuria concept)
💡 The insight

The Lemuria hypothesis was proposed to explain disjunct lemur distributions across India, Madagascar and Africa, showing past land connections shape current species distributions.

Useful for answering questions that link plate tectonics, fossil distribution and present-day biogeography; enables explanation of discontinuous species ranges and supports reasoning in physical geography and environment sections.

📚 Reading List :
  • FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 3: Interior of the Earth > Distribution of Fossils > p. 28
  • Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 7: Tectonics > Distribution of Fossils > p. 97
🔗 Anchor: "Is the indri (a lemur species) native to Brazil?"
📌 Adjacent topic to master
S2
👉 Native ranges of deer (cervids) in South Asia
💡 The insight

Lists of Indian deer species demonstrate that cervid distributions are region-specific within South Asia.

Understanding which deer species are native to particular regions helps answer biogeography and wildlife distribution questions; it connects to conservation, national parks and species protection policy. High-yield for questions on animal endemism and habitat-based distribution.

📚 Reading List :
  • Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 4: BIODIVERSITY > x) not evaluated (ne) > p. 16
  • Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Herbivorous > p. 82
  • CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025) > Chapter 5: Natural Vegetation and Wildlife > WILDLIFE > p. 43
🔗 Anchor: "Is the elk (a cervid species) native to Indonesia?"
📌 Adjacent topic to master
S2
👉 Native vs introduced species and invasion impacts
💡 The insight

Invasion and species richness concepts explain how non-native species can be added to or reduce a region's native species pool.

Helps tackle UPSC questions on invasive species, biodiversity loss and biodiversity management; links ecological theory to policy responses and conservation strategy. Enables analysis-type answers about causes and consequences of biological invasions.

📚 Reading List :
  • Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 13: Plant Diversity of India > 13.4.1. Invasion and Species Richness > p. 199
🔗 Anchor: "Is the elk (a cervid species) native to Indonesia?"
📌 Adjacent topic to master
S2
👉 Human-mediated diffusion of crops and species in tropical Asia
💡 The insight

Distribution and diffusion records for crops like rubber and mesta show how human activity moves species across countries including Indonesia.

Useful for questions on agricultural biogeography, crop origins and diffusion, and human impacts on species distribution; connects physical geography, economic geography and environmental change topics frequently tested in UPSC.

📚 Reading List :
  • Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Mesta (Hibicus sabdarifa) > p. 51
  • Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Rubber (Hevea brasiliensis) > p. 48
🔗 Anchor: "Is the elk (a cervid species) native to Indonesia?"
📌 Adjacent topic to master
S3
👉 Madagascar's primate endemism
💡 The insight

Madagascar harbours primate families and primates found nowhere else, so determining whether a given primate is native requires knowledge of Madagascar's high endemism.

High-yield for UPSC because questions often test island endemism and biodiversity hotspots; links to conservation policy and species distribution topics. Mastery helps eliminate implausible native ranges for species and frames answers on endemic species protection.

📚 Reading List :
  • Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 4: BIODIVERSITY > Africa > p. 8
  • Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 2: PLANT AND ANIMAL KINGDOMS > 4. Ethiopian region > p. 13
🔗 Anchor: "Is the bonobo (Pan paniscus) native to Madagascar?"
🌑 The Hidden Trap

The 'Wallace Line'. Just as Madagascar is distinct from Africa, the Wallace Line separates Indomalayan fauna (Tigers, Orangutans) from Australasian fauna (Marsupials). Expect a question asking why Kangaroos aren't in Indonesia (West of the line).

⚡ Elimination Cheat Code

Use the 'Plate Tectonics' Hack: Madagascar separated from Africa ~160 million years ago, long before Great Apes (Bonobos) evolved. Therefore, it is geologically impossible for a Bonobo to be native to Madagascar. Similarly, 'Indri' sounds like 'India', but it's a Lemur. NCERT explicitly links Lemurs to 'Lemuria' (India-Madagascar-Africa connection), NOT South America (Brazil). Pairs 1 and 3 eliminated instantly.

🔗 Mains Connection

Anthropology & Evolution (Mains GS-I/III): The distribution of Bonobos (South of Congo River) vs Chimpanzees (North) is a classic example of 'Allopatric Speciation' driven by geographic barriers. This explains why river systems define biodiversity hotspots.

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