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Tundra in polar regions has mosses, lichens, shrubs, etc., while the Himalaya, in the subtropics, is dominated by conifers. What could be the reason for this? What difference do you find in the animals found in these two regions? Which species are found only in the Himalaya? Discuss in class.
Polar tundra faces extreme photoperiod variations and permafrost that prevents deep tree root penetration, restricting flora to low-growing mosses and lichens. The Himalayas, located in lower subtropical latitudes, receive stronger sunlight and possess deeper soils supporting coniferous forests. TunRead more
Polar tundra faces extreme photoperiod variations and permafrost that prevents deep tree root penetration, restricting flora to low-growing mosses and lichens. The Himalayas, located in lower subtropical latitudes, receive stronger sunlight and possess deeper soils supporting coniferous forests. Tundra fauna like polar bears, arctic foxes and caribou adapt to flat icy plains, while Himalayan species like the snow leopard, Himalayan tahr and musk deer uniquely adapt to precipitous, rocky mountain altitudes.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See lessExplore your local environment. This could be your village, city, town or residential area. Observe how people, plants and animals build structures and interact. Complete the table with your findings.
Across local settlements, structures reflect environmental adaptation. Humans construct brick, wood or concrete houses for weather protection. Birds weave intricate nests using twigs and grass for breeding, while insects like bees and ants construct hives and underground colonies. Roadside trees proRead more
Across local settlements, structures reflect environmental adaptation. Humans construct brick, wood or concrete houses for weather protection. Birds weave intricate nests using twigs and grass for breeding, while insects like bees and ants construct hives and underground colonies. Roadside trees provide microclimatic cooling, canopy perches and food for squirrels and birds, demonstrating how living organisms actively modify surroundings and share space within human-altered environments.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See lessConsidering the climatic conditions, why do you think the Nubra Valley camel might have a different fur density than the Rajasthan camel?
Nubra Valley is a high-altitude cold desert where winter temperatures drop drastically below freezing. The local Bactrian camel grows a dense, woolly coat that traps insulating air, preventing hypothermia. Conversely, Rajasthan’s hot Thar Desert features extreme solar radiation and scorching temperaRead more
Nubra Valley is a high-altitude cold desert where winter temperatures drop drastically below freezing. The local Bactrian camel grows a dense, woolly coat that traps insulating air, preventing hypothermia. Conversely, Rajasthan’s hot Thar Desert features extreme solar radiation and scorching temperatures; dromedary camels there possess short, sleek coats designed to reflect solar radiation, prevent overheating and allow efficient sweat evaporation without moisture depletion.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See lessWith the help of your teacher, explore how do people address issues related to the availability of water.
People tackle water scarcity using traditional engineering combined with modern technology. Traditional practices include constructing stepwells (baolis), storage tanks (tankas), check dams and johads to capture monsoon runoff. Modern approaches involve rooftop rainwater harvesting, treated wastewatRead more
People tackle water scarcity using traditional engineering combined with modern technology. Traditional practices include constructing stepwells (baolis), storage tanks (tankas), check dams and johads to capture monsoon runoff. Modern approaches involve rooftop rainwater harvesting, treated wastewater recycling, automated drip and sprinkler irrigation, seawater desalination and watershed restoration. Communities also establish participatory water user associations and enforce local rationing rules to maintain and replenish regional groundwater tables sustainably.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See lessHow do physiography and climate shape life on Earth?
Landforms such as mountains, plains and plateaus influence soil depth and water movement, while climatic factors like precipitation, sunlight and temperature determine moisture availability. Together, they establish diverse terrestrial biomes. These physical and atmospheric conditions dictate the stRead more
Landforms such as mountains, plains and plateaus influence soil depth and water movement, while climatic factors like precipitation, sunlight and temperature determine moisture availability. Together, they establish diverse terrestrial biomes. These physical and atmospheric conditions dictate the structural adaptations, feeding habits and reproduction cycles of organisms, creating distinct flora and fauna across polar tundras, tropical rainforests, temperate woodlands and arid desert landscapes worldwide.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See less