World Climate Types & Climatic Regions – NDA Geography PYQs

NDA 2018-I

Q. 1. Equatorial rainforests are found in which of the following regions?

1. Amazon basin

2. Congo basin

3. South-East Asian islands

Select the correct answer using the code given below:

(a) 1 and 2 only

(b) 2 and 3 only

(c) 1 and 3 only

(d) 1, 2 and 3

Answer: (d) 1, 2 and 3

Explanation: All three are major equatorial rainforest regions: Amazon basin (1): South America; the world’s largest tropical rainforest. Congo basin (2): Central Africa; the world’s second-largest tropical rainforest. South-East Asian islands (3): Indonesia (Borneo, Sumatra, New Guinea), Malaysia, Philippines; significant tropical rainforests. Together these three account for the vast majority of the world’s remaining tropical rainforests. Concept Tested: Equatorial rainforests in all three: Amazon (S. America), Congo (Africa), South-East Asian islands; all correct

NDA 2017-I

Q. 2. Which of the following is the characteristic feature of the Tropical Rainforest climate?

(a) High temperature and heavy rainfall throughout the year

(b) High temperature with distinct dry and wet seasons

(c) Moderate temperature and moderate rainfall

(d) Very high temperature with little or no rainfall

Answer: (a) High temperature and heavy rainfall throughout the year

Explanation: Tropical Rainforest climate (equatorial climate: Köppen Af) is characterised by: 1. High temperatures year-round (average 25–27°C; no cold season). 2. Heavy rainfall throughout the year: typically more than 200 cm annually; no distinct dry season. 3. High humidity: the air is always saturated or near-saturated. 4. Daily convectional thunderstorms: afternoons bring heavy rain. Locations: Amazon Basin, Congo Basin, South-East Asia (Malaysia, Indonesia, Philippines, parts of India’s Western Ghats). Concept Tested: Tropical rainforest (equatorial) climate: high temp + heavy rainfall throughout the year; no dry season

NDA 2016-I

Q. 3. The desert climate is characterised by:

(a) Annual precipitation below 25 cm

(b) Annual precipitation between 25 and 50 cm

(c) No rainfall throughout the year

(d) Irregular rainfall above 50 cm

Answer: (a) Annual precipitation below 25 cm

Explanation: Desert climates (Köppen BWh for hot desert, BWk for cold desert) are typically defined by annual precipitation below 250 mm (25 cm). Alternatively, desert is where evapotranspiration exceeds precipitation significantly. Hot deserts: Sahara, Arabian Desert, Iranian Plateau, Thar (India), Australian deserts. Cold deserts: Gobi, Patagonian Desert. Deserts do receive some rainfall, but it is very low and unreliable. Option (c) is incorrect: deserts are not completely rainless. Concept Tested: Desert climate: annual precipitation below 25 cm (250 mm); hot and cold deserts; evapotranspiration exceeds precipitation

NDA 2015-I

Q. 4. The natural vegetation of the Savanna climate region is:

(a) Tropical rain forests

(b) Tropical grasslands with scattered trees

(c) Temperate grasslands

(d) Xerophytic vegetation

Answer: (b) Tropical grasslands with scattered trees

Explanation: The Savanna climate (tropical wet-dry climate) has tropical grasslands with scattered trees as its characteristic natural vegetation. During the wet season, tall grasses flourish; during the dry season, grasses dry up. The scattered trees: particularly acacia (thorny, flat-topped) and baobab: are adapted to the seasonal drought through deep roots and water storage. The savanna is a transition biome between the equatorial rainforest (more rainfall, denser vegetation) and the tropical desert (less rainfall, sparser vegetation). Concept Tested: Savanna climate vegetation: tropical grasslands with scattered trees (acacia, baobab); seasonal wet-dry

NDA 2014-I

Q. 5. The natural grasslands of the temperate zones in the interior of Asia are called:

(a) Prairies

(b) Savannas

(c) Pampas

(d) Steppes

Answer: (d) Steppes

Explanation: Steppes are the temperate grasslands of Central Asia and Eastern Europe: the vast, treeless grasslands stretching from Ukraine, Russia, Kazakhstan, and into Mongolia and China. They are characterised by continental climate (hot summers, cold winters, low rainfall), short grasses, and deep, fertile black soils (chernozem). Prairies: temperate grasslands of North America (USA/Canada). Pampas: temperate grasslands of South America (Argentina). Savannas: tropical grasslands between equatorial forests and deserts. Concept Tested: Steppes = temperate grasslands of interior Asia (Central Asia, Russia, Ukraine); chernozem soils

NDA 2013-II

Q. 6. The coniferous forests found in the cold climate regions are also called:

(a) Selvas

(b) Pampas

(c) Taiga

(d) Tundra

Answer: (c) Taiga

Explanation: Taiga (also called boreal forest or coniferous forest) is the world’s largest terrestrial biome: vast coniferous forests found in the cold, continental climate zones of the Northern Hemisphere between about 50°N and 70°N. Characteristics: Dominated by conifers (pine, spruce, fir, larch): adapted to cold, snowy conditions. Long, cold winters (down to −40°C); short, cool summers. Found across Canada, northern Europe (Scandinavia), and Russia (Siberia). Selvas: tropical rainforests of the Amazon. Pampas: temperate South American grasslands. Tundra: the treeless, polar biome north of the taiga. Concept Tested: Taiga: boreal/coniferous forest in cold regions (50°N–70°N); largest terrestrial biome; distinct from Tundra

★ JOVIK Exam Insight Biome names for NDA (frequently confused): Equatorial zone: Selvas (Amazon rainforest) → tropical rainforest. Tropical grassland: Savanna → 5°–20° latitude. Temperate grasslands: Prairies (N. America), Steppes (C. Asia/E. Europe), Pampas (S. America), Veld (S. Africa). Temperate coniferous forest: Taiga / Boreal forest → 50°–70°N. Polar: Tundra → above 65°–70°N; no trees, permafrost. Shrubland: Mediterranean → 30°–45° western coasts.

NDA 2013-I

Q. 7. The natural vegetation associated with Mediterranean climate consists of:

(a) Dense forests with broad leaves

(b) Drought-resistant shrubs and trees with waxy and thick leaves

(c) Coniferous forests

(d) Tall grasses

Answer: (b) Drought-resistant shrubs and trees with waxy and thick leaves

Explanation: Mediterranean vegetation is xerophytic (drought-adapted): it has evolved to survive the long, hot, dry summers. Characteristic adaptations: 1. Hard, thick, waxy leaves: reduce water loss through transpiration. 2. Deep root systems: access groundwater during dry season. 3. Thick bark: resist fire (Mediterranean ecosystems are fire-adapted). 4. Small leaves or thorns: reduce surface area and water loss. Vegetation types: Chaparral (California), Maquis (France/Italy), Garrigue (South France), Fynbos (South Africa), Mallee Scrub (Australia). Concept Tested: Mediterranean vegetation: drought-resistant xerophytes with waxy/thick leaves; chaparral, maquis; fire-adapted

NDA 2012-II

Q. 8. Consider the following statements about Monsoon climate:

1. Monsoon climate is characterized by seasonal reversal of winds.

2. It is mainly found in South and South-East Asia.

Which of the statements given above is/are correct?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

Answer: (c) Both 1 and 2

Explanation: Statement 1: Correct. The monsoon climate is fundamentally defined by the seasonal reversal of wind direction. In summer, onshore winds bring heavy rainfall; in winter, offshore winds bring dry conditions. Statement 2: Correct. The monsoon climate is primarily found in South Asia (India, Bangladesh, Pakistan, Sri Lanka) and South-East Asia (Myanmar, Thailand, Vietnam, Philippines, Indonesia). It also occurs in West Africa and northern Australia. Concept Tested: Monsoon climate: seasonal wind reversal; mainly in South and South-East Asia

NDA 2011-II

Q. 9. Which region has an equatorial type of climate?

(a) Amazon basin

(b) Northern Europe

(c) Western part of North America

(d) Eastern China

Answer: (a) Amazon basin

Explanation: The Amazon basin in South America is the world’s largest equatorial rainforest region. It has a classic equatorial (tropical rainforest) climate: hot and wet throughout the year, with very high annual rainfall (over 200 cm). The equatorial climate is found between approximately 5°N and 5°S (in some areas extending to 10°). Other equatorial regions: Congo Basin (Central Africa), South-East Asia (parts of Indonesia, Malaysia, Thailand). Northern Europe (temperate maritime), Western North America (Mediterranean or temperate oceanic), Eastern China (humid subtropical). Concept Tested: Equatorial climate: Amazon basin; hot and wet year-round; near the equator (5°N–5°S approximately)

NDA 2010-I

Q. 10. The Tropical Grasslands are called:

(a) Prairies

(b) Steppes

(c) Savanna

(d) Pampas

Answer: (c) Savanna

Explanation: Tropical Grasslands are called Savanna. They are found between tropical rainforests and tropical deserts: typically between 5° and 20° latitude. Savannas have a wet season (monsoon-influenced) and a distinct dry season. They have widely spaced trees (like acacia and baobab) with grasses between them. Other grassland names: Prairies: temperate grasslands in North America. Steppes: temperate grasslands in Central Asia and Eastern Europe. Pampas: temperate grasslands in South America (Argentina/Uruguay). Veld: temperate grasslands in South Africa. Concept Tested: Savanna : tropical grasslands; seasonal wet-dry climate; between 5° and 20° latitude

NDA 2009-II

Q. 11. The Tundra type of climate is characterised by:

(a) Hot and wet climate

(b) Very low precipitation and high temperature

(c) Hot and dry climate

(d) Very low temperature and low precipitation

Answer: (d) Very low temperature and low precipitation

Explanation: The Tundra climate (Köppen ET: Tundra) is found in the Arctic and sub-Arctic regions (above 60°–65°N) and on high mountain plateaus. Key characteristics: Extremely cold: average temperature of warmest month is between 0°C and 10°C. Very low precipitation: annual precipitation typically below 250 mm; mostly snow. Permafrost: permanently frozen ground; only the top layer thaws in summer. No trees: only mosses, lichens, sedges, and low shrubs. Examples: Northern Canada, Alaska, Siberia, Greenland, Antarctica margins. Concept Tested: Tundra climate: very cold (warmest month < 10°C); very low precipitation; permafrost; no trees

NDA 2007-I

Q. 12. The Mediterranean climate is characterized by:

(a) Hot wet summers and cool dry winters

(b) Hot dry summers and warm wet winters

(c) Cool dry summers and cold wet winters

(d) Wet summers and dry winters

Answer: (b) Hot dry summers and warm wet winters

Explanation: The Mediterranean climate (also called the “dry-summer” climate: Köppen Cs) is characterised by: Hot, dry summers: the subtropical high pressure belt dominates, blocking rainfall. Warm (or mild), wet winters: westerly winds and frontal systems bring winter rainfall. It is found on western coasts of continents between 30° and 45° latitude: Mediterranean region (Spain, France, Italy, Greece), California (USA), Central Chile, southwestern Australia (Perth), South Africa (Cape region). Concept Tested: Mediterranean climate: hot DRY summers; warm WET winters; western coasts 30–45° latitude

★ JOVIK Exam Insight Mediterranean climate characteristics for NDA: → Hot dry summers (subtropical high blocks rain). → Mild wet winters (westerlies bring frontal rain). → Xerophytic vegetation (hard waxy leaves, chaparral/maquis). → Regions: Mediterranean basin, California, Chile, SW Australia, Cape SA. A common NDA trap: confusing Mediterranean (dry SUMMER) with Monsoon (dry WINTER). Mediterranean = dry summer. Monsoon climate = dry winter.

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