Looking for accurate SEBA Class 10 Advanced Geography Chapter 3 (Region and Regional Geography of the World) textual solutions for the 2026–27 academic year? Access complete step-by-step answers, region concepts, classification of natural/cultural regions, world regional topography, economic activities, and exercise solutions designed according to the latest revised Assam Board (SEBA/HSLC) curriculum to score top marks in your board exams.
1. What do you mean by ‘Natural Region’? To how many natural regions the whole earth can be divided? Write their names and show in the map.
Answer: Natural Region:
A natural region is a major unit of the Earth’s surface that possesses uniform physical characteristics, particularly climate, soil, relief, and natural vegetation throughout its area.
Major Natural Regions:
Based on climatic zones, the Earth is broadly divided into 4 major groups, which are further classified into 10 major natural regions:
- Low-Latitude (Tropical) Regions:
- Equatorial Lowland Region
- Tropical Monsoon Region
- Tropical Savannah / Grassland Region
- Tropical Hot Desert Region
- Mid-Latitude (Temperate) Regions:
- Mediterranean Region
- Temperate Grassland Region (Steppes, Prairies)
- Warm Temperate Eastern Margin (China Type)
- Cool Temperate Western Margin (British Type)
- High-Latitude (Cold) Regions:
- Taiga / Cold Coniferous Forest Region
- Tundra Region
2. How can the regional geography of the world be understood through the study of natural regions? Write in brief.
Answer: Regional geography focuses on understanding how natural environment and human activities interrelate in specific areas. The study of natural regions helps us understand regional geography because:
- Identifies Uniformity: It groups different places with similar climate, plants, and soil under one heading, making comparative study easier.
- Explains Human Adaptation: It shows how human occupations, clothing, shelter, and economic activities are shaped by local environmental conditions.
- Simplifies Global Patterns: Instead of studying over 190 countries individually, geographers can study a few natural regions to understand the geography of the entire world.
3. Write about the physical environment of each of the natural regions of the world.
Answer: 1. Equatorial Region: Located near the Equator ($0^\circ-10^\circ\text{ N/S}$). Dense evergreen forests, flat river basins (Amazon, Congo), hot and humid atmosphere.
2. Tropical Monsoon Region: Found in South and Southeast Asia. Marked by seasonal wind reversal, fertile alluvial plains, and distinct wet and dry seasons.
3. Tropical Savannah Region: Open grasslands with scattered trees surrounding tropical deserts. Flat or rolling plateaus with poor water retention.
4. Tropical Hot Desert Region: Located on the western margins of continents ($15^\circ-30^\circ\text{ N/S}$). Covered with dry sand dunes, rocky plateaus, and dry wadis.
5. Mediterranean Region: Situated on western margins of continents ($30^\circ-45^\circ\text{ N/S}$). Characterized by mild, wet winters and hot, dry summers with coastal hill slopes.
6. Temperate Grassland Region: Deep continental interiors. Vast, treeless flat plains with fertile dark soil (Chernozem).
7. Taiga (Coniferous Forest) Region: Sub-polar belt in North America and Eurasia. Softwood evergreen forests, frozen subsoils, and glaciated landscapes.
8. Tundra Region: Extreme polar margins. Snow-covered, permanently frozen ground (permafrost) with short summer thaw periods.
SEBA Class 10 Advanced Geography Chapter 3 Solutions
4. Discuss about the climate and vegetation as found in different natural regions of the world.
Answer:
| Natural Region | Climate Characteristics | Natural Vegetation |
| Equatorial | Hot and wet year-round (27 degree C average, more than 200 cm rain) | Dense, broad-leaved evergreen rainforests (Mahogany, Ebony) |
| Monsoon | Hot wet summer, cool dry winter (100 to 200 cm rain) | Tropical deciduous forests (Teak, Sal, Bamboo) |
| Savannah | High temperatures year-round, moderate summer rain | Tall coarse grass (Elephant grass) with scattered Acacia trees |
| Hot Desert | Extremely hot days, cold nights, very low rainfall (less than 25 cm) | Xerophytic plants, Cacti, thorny bushes, date palms near oases |
| Mediterranean | Warm dry summers, cool wet winters (50 to 75 cm rain) | Thick-barked, wax-leaved trees (Olive, Oak, Cork, Citrus fruits) |
| Temperate Grassland | Hot summers, freezing winters, moderate rainfall (25 to 50 cm) | Short, nutrient-rich grasses without trees |
| Taiga | Long bitterly cold winters, brief warm summers | Coniferous softwood evergreen trees (Pine, Spruce, Fir) |
| Tundra | Long dark freezing winters, brief summers (0 degree C) | Low mosses, lichens, and dwarf shrubs |
5. Give a description of the life styles of the people living in different natural regions of the world.
Answer: 1. Equatorial Region: Sparsely populated. Indigenous tribes practice gathering, hunting, shifting cultivation, or work on commercial plantations (rubber, cocoa).
2. Monsoon Region: Highly densely populated. Most people depend on intensive agriculture (rice, wheat, tea, sugarcane) and river valley industries.
3. Savannah Region: Traditional pastoralism and nomadic herding (e.g., Masai of East Africa), along with cattle rearing and big-game wildlife tourism.
4. Hot Desert Region: Nomadic tribes (Bedouins, Tuaregs) migrate with camels and goats. Settled farming and trade flourish around oases.
5. Mediterranean Region: Highly developed standard of living based on commercial orchard farming, wine production, citrus fruit export, and tourism.
6. Temperate Grassland: Modern commercial wheat farming and extensive mechanized cattle and sheep ranching.
7. Taiga Region: Lumbering, forestry, paper manufacturing, and commercial fur trapping.
8. Tundra Region: Native populations (Inuits/Eskimos, Lapps) traditionally live by hunting seals, whales, and reindeer herding.
Class 10 Advanced Geography Chapter 3 Question Answer SEBA 2026-27
6. How many and what are the continents in the world? Give a brief geographical introduction of each of the continents.
Answer: There are 7 continents in the world:
- Asia: The largest continent, situated mostly in the Northern and Eastern Hemispheres. It has extreme diversity in relief, climate, and culture.
- Africa: The second-largest continent, bisected by the Equator. Known for vast deserts, savannahs, plateaus, and the Great Rift Valley.
- North America: Lies entirely in the Northern and Western Hemispheres. Characterized by western folded mountains (Rockies) and central fertile plains.
- South America: Located mostly in the Southern Hemisphere. Home to the Amazon rainforest and the world’s longest mountain range (Andes).
- Antarctica: The southernmost continent surrounding the South Pole. Completely frozen, uninhabited by permanent human settlements.
- Europe: Located west of Asia. Highly industrialized, with indented coastlines, peninsulas, and fertile central plains.
- Australia: The smallest continent and an island nation. Characterized by a dry interior (Outback), ancient low plateaus, and the Great Barrier Reef.
7. Which is the largest continent in the world? Write briefly about the physiographic character of the continent.
Answer: Asia is the largest continent in the world, covering about one-third of the total land area of the Earth.
Physiographic Characteristics:
- Central Mountain Knot: The Pamir Knot forms the center from which major mountain ranges radiate (Himalayas, Karakoram, Kunlun, Tian Shan).
- Northern Lowlands: Broad, flat plains of Siberia drained by rivers like Ob, Yenisei, and Lena flowing into the Arctic Ocean.
- Southern Peninsular Plateaus: Ancient stable rock blocks including the Deccan Plateau (India) and the Arabian Plateau.
- Fertile River Plains: Vast agricultural plains formed by major rivers like Ganga, Brahmaputra, Indus, Yangtze, and Hwang Ho.
SEBA Class 10 Advanced Geography Ch 3 Textbook Answers
8. Which is the most populous continent in the world? Write in brief about the population and economic characteristics of that continent.
Answer: Asia is the most populous continent in the world, inhabiting over 60% of the world’s population.
- Population Characteristics:
- Highly unevenly distributed. Densely populated areas include South Asia (India, Bangladesh) and East Asia (China, Japan), while Siberia and high plateaus are very sparsely populated.
- Rapid urbanization with high population growth rates in developing countries.
- Economic Characteristics:
- Agriculture is the primary occupation, especially wet paddy cultivation in monsoon river valleys.
- Rich in mineral reserves like coal, petroleum, iron ore, and natural gas.
- Home to major manufacturing hubs and fast-growing global economies (China, India, Japan, South Korea).
9. Mention the geographical characteristics of the continent of Europe.
Answer: 1. Location: Located entirely in the Northern Hemisphere, bounded by the Arctic Ocean to the north, Atlantic Ocean to the west, and Mediterranean Sea to the south.
2. Indented Coastline: Has a highly broken and indented coastline with numerous peninsulas, bays, gulfs, and natural harbors.
3 .Topography: Divided into the North European Plain in the center and high fold mountains (Alps, Pyrenees, Carpathians) in the south.
4. Moderate Climate: Warmed by the North Atlantic Drift (warm ocean current) and Westerlies, giving it a moderate climate throughout the year.
10. Write briefly about the topography and mineral resources of the continent of North America.
Appalachian Highlands: Old, eroded mountain ranges in the east.
Mineral Resources:
Abundant reserves of coal (Appalachians), iron ore (Lake Superior region), petroleum and natural gas (Texas, Alaska, Western Canada), and copper, gold, and silver (Rocky Mountains).
11. Write in brief about the drainage and vegetation of the continent of South America.
Other major rivers include the Orinoco in the north and the Parana-Paraguay system in the south.
Temperate Grasslands: The fertile Pampas of Argentina.
12. Mention the major mountain systems and rivers of the world and show them in the map.
Atlas Mountains (Africa)
Danube and Volga (Europe)
13. Write in brief about the climate and mode of living in the continent of Africa.
Answer: Climate:
Because the Equator passes through its center, Africa is the hottest continent. Climate zones are arranged symmetrically on either side of the Equator: equatorial hot-wet climate in the middle, surrounded by tropical savannahs, vast hot deserts (Sahara in the north, Kalahari in the south), and a Mediterranean climate on the extreme northern and southern tips.
- Mode of Living:
- Rural agricultural lifestyle predominates, with shifting cultivation and subsistence farming (maize, cassava, sorghum).
- Nomadic pastoralism in dry desert margins.
- Commercial farming of cocoa, coffee, palm oil, and cotton in coastal and tropical areas.
- Mining (diamonds, gold, copper, petroleum) forms the backbone of commercial economic activity in countries like South Africa and Nigeria.
14. Which is the smallest continent in the world? Write briefly about the geographical situation of that continent.
Answer: Australia is the smallest continent in the world.
Geographical Situation:
- Located completely in the Southern and Eastern Hemispheres.
- Surrounded on all sides by oceans (Indian Ocean to the west and south, Pacific Ocean to the east), making it an island continent.
- Lies between latitudes 10∘ S and 39∘ S and longitudes 113∘ E and 153∘ E.
15. Write short notes:
Answer: (a) Major Grassland regions of the world
Grasslands cover areas where rainfall is insufficient for dense forests but enough to prevent deserts. They are divided into two types:
- Tropical Grasslands (Savannahs): Located between tropical forests and deserts (e.g., Savanna in Africa, Llanos in Venezuela).
- Temperate Grasslands: Located in continental interiors with fertile soil (e.g., Prairies in North America, Steppes in Eurasia, Pampas in Argentina, Veldts in South Africa, Downs in Australia).
(b) Equatorial natural region
Extends between 0∘ and 10∘ North and South of the Equator (Amazon Basin, Congo Basin, Malaysia, Indonesia). Experiences uniform high temperatures (27∘C) and heavy daily afternoon conventional rainfall (200 cm). Home to dense broad-leaved evergreen rainforests (Selvas) rich in biodiversity.
(c) Mediterranean natural region
Located on the western coasts of continents between 30∘ and 45∘ N/S latitudes (Mediterranean basin, California, Central Chile, SW Australia). Characterized by dry summers and wet winters. Renowned for citrus fruits (oranges, lemons, grapes), olive trees, and winemaking industries.
(d) Monsoon region
Located in South and Southeast Asia between 10∘ and 30∘ N/S latitudes. Characterized by seasonal wind reversals bringing heavy summer rains and dry winters. Densely populated region dependent on tropical agriculture (rice, tea, jute, sugarcane).
(e) Topography and climate of Asia
Asia features complex topography ranging from the world’s highest mountains (Himalayas, Mt. Everest) and high plateaus (Tibet) to broad fertile river plains (Ganga, Yangtze). Its climate varies from equatorial heat in the south to arctic freezing cold in northern Siberia, influenced heavily by monsoon wind systems.
(f) Tundra region
Lies along the Arctic polar margins north of 66.5∘ N latitude. Experiences extremely cold long winters and very short, cool summers. The soil is permanently frozen (permafrost). Vegetation is limited to mosses, lichens, and dwarf willows. Inhabited by native groups like Inuits and Lapps.
(g) World population and its distribution
The world population is highly unevenly distributed due to relief, climate, soil, and industrial development. Highly populated zones include river valleys and coastal plains of East Asia, South Asia, and Western Europe. Sparsely populated zones include cold tundra, hot deserts, high mountain peaks, and dense tropical rainforests.
(h) Tropical Grassland region
Also called the Savannah region, situated between 10∘ and 20∘ N/S latitudes in Africa and South America. Experiences hot summers with moderate rainfall and dry winters. Dominated by tall, coarse grass (Elephant grass) and scattered trees. Known as “Big Game Country” due to vast herds of herbivores and carnivores.
(i) Tropical Hot Desert region
Located along the western margins of continents between 15∘ and 30∘ N/S latitudes (Sahara, Arabian, Thar, Atacama, Australian Deserts). Characterized by high daytime temperatures, low night temperatures, and extremely scant rainfall (<25 cm). Vegetation consists of thorny bushes, cacti, and date palms.
(j) Cold coniferous forest region
Also known as the Taiga region, extending across a broad belt in northern North America and Eurasia (55∘−70∘ N). Characterized by long, severe winters and short cool summers. Home to vast evergreen coniferous softwood forests (pine, fir, spruce) used extensively for commercial lumbering and paper production.
Region and Regional Geography of the World Class 10 SEBA Chapter 3
SEBA Class 10 Elective Geography Chapter 3 HSLC Solutions
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