False. The Himalayas are young mountains, but they have sharp, rugged peaks rather than rounded tops. Their height and steepness distinguish them from older mountain ranges, which have more eroded, rounded features.
Class 6 Social Science Chapter 3 Landforms and Life question answer
Class 6 NCERT Social Science India and the World: Land and the People Chapter 3 Landforms and Life
(a) False. The Himalayas are considered young mountains, formed around 50 million years ago. Unlike older ranges that have been smoothed by erosion, the Himalayas retain steep, pointed peaks and sharp ridges, as their upliftment continues today. This youthfulness gives them dramatic elevations and rugged landscapes, contrasting with older, rounded mountain formations like the Aravalli Range, which have been worn down over millions of years.
(b) True. A plateau is characterized by its elevated, flat surface and often has a steep slope or cliff on at least one side, rising sharply from the surrounding terrain. This unique formation results from volcanic activity, erosion, or tectonic uplift, distinguishing plateaus from plains and mountains. Examples like the Deccan Plateau illustrate this structure, showcasing its steep slopes and flat expanses suitable for limited agriculture and habitation.
(c) True. Both mountains and hills are elevated landforms, but mountains typically have greater height and steeper slopes than hills. Hills are shorter and often have more gradual, rounded slopes, while mountains feature rugged terrain and sharp peaks. Though classified together as highlands, these differences in height and formation create distinct landscapes, affecting the climate, flora, and fauna present in each type of elevated terrain.
(d) False. Different landforms in India support varied ecosystems. Mountains like the Himalayas have alpine vegetation and species adapted to high altitudes. Plateaus host hardy plants and animals suited to rocky soils and mineral-rich areas, while rivers sustain unique aquatic ecosystems, including fish and riparian plants. These distinct habitats reflect India’s ecological diversity, showing how elevation, climate, and water availability create unique environments with specialized flora and fauna across landforms.
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