MCQ
Natural Vegetation MCQ - Practice Questions with Answers
Solve 137 Natural Vegetation questions for RAS/RPSC preparation.
Practice questions
Q1Consider the following statements about temperate grasslands: 1. Temperate grasslands receive between 25–75 cm of annual rainfall, insufficient to support forests but sufficient to prevent desertification. 2. The absence of trees in temperate grasslands is solely due to periodic fires ignited by lightning. 3. Temperate grasslands typically have a thick, humus-rich topsoil that makes them among the world's most fertile agricultural lands. 4. Steppes of Central Asia are characterised by a continental climate with extreme temperature variations between summer and winter. Which of the statements given above are CORRECT?
Statements 1, 3 and 4 are correct. (1) Temperate grasslands receive 25–75 cm annual rainfall — enough to prevent desert formation but insufficient for closed-canopy forests. (3) Their deep chernozem (black earth) or mollisol soils are among Earth's richest agricultural soils, which is why the Prairies and Steppes are major grain belts. (4) Continental Steppe climate has cold winters (down to −40°C) and warm summers — extreme seasonal range. Statement 2 is WRONG: treelessness results from multiple interacting factors including low/seasonal rainfall, drought, intense grazing, and fire — not fire alone.
Q2The 'Veld' grasslands are found in:
Veld (also spelled Veldt) are the temperate grasslands of South Africa, found at elevations of 600-1100m. They are important for grazing and mining.
Q3Arrange the following biomes in INCREASING order of their annual net primary productivity (NPP) per unit area (lowest to highest):
Net Primary Productivity (NPP) increasing order: Tundra (~1-2 t C/ha/yr, frozen soils, short growing season) < Taiga (~3-5 t C/ha/yr, cold winters limit growth) < Temperate Grassland (~5-7 t C/ha/yr, seasonal but productive) < Tropical Rainforest (highest, ~10-20 t C/ha/yr, year-round warmth and moisture). Tropical rainforests produce the most biomass on Earth.
Q4Consider the following statements: 1. Tropical rainforest trees may develop buttress roots for structural support in shallow, waterlogged soils. 2. Tropical rainforest soils are generally nutrient-rich and deep, so nutrients are stored mainly in the soil. 3. Mangroves grow in intertidal tropical and subtropical coastlines, and pneumatophores help them breathe in waterlogged soil. 4. Fynbos is a Mediterranean-climate shrubland found in southern Brazil. Which of the statements given above are correct?
Statement 1 is correct because buttress roots are an adaptation of tall tropical rainforest trees where shallow, waterlogged soils limit deep tap roots. Statement 2 is incorrect because tropical rainforest soils are nutrient-poor; nutrients are mainly held in biomass and litter, not stored deeply in soil. Statement 3 is correct because mangroves occupy intertidal tropical and subtropical coasts, and pneumatophores absorb oxygen from waterlogged soil. Statement 4 is incorrect because Fynbos belongs to South Africa's Cape Floristic Region, not southern Brazil.
Q5Consider the following statements: 1. Taiga, or boreal forest, is the world's largest terrestrial biome. 2. Taiga is dominated by coniferous trees such as spruce, fir, larch and pine. 3. Taiga stretches across northern Russia and Canada. Which of the statements given above are correct?
Statement 1 is correct because calls taiga the world's largest terrestrial biome. Statement 2 is correct because it is dominated by coniferous trees including spruce, fir, larch and pine. Statement 3 is correct because it stretches across northern Russia and Canada.
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More questions
6Consider the following statements: 1. The world's forests cover about 4.06 billion hectares. 2. More than half of the world's forests are in only five countries: the Russian Federation, Brazil, Canada, the United States of America and China. 3. Brazil has 815 million hectares of forest, while the Russian Federation has 497 million hectares. 4. Among the major climatic regions, the tropical zone contains the highest percentage of forest area. Which of the statements given above are correct?
7Consider the following statements: 1. Taiga has a highly diverse multilayered canopy like a tropical rainforest. 2. Taiga is dominated by conifers and has low species diversity with acidic podzol soils. 3. Tundra has permafrost beneath the surface, very low precipitation and no true trees. 4. Alpine tundra is restricted only to Arctic regions above 70 degrees latitude. Which of the statements given above are correct?
8Consider the following statements: 1. Tropical forests receive annual rainfall exceeding 200 cm. 2. Tropical forest soils are generally nutrient-poor and acidic, with heavy leaching. 3. Tropical forests have a single, open canopy that allows abundant light to reach the forest floor. 4. Tropical forests have a distinct winter season like temperate forests. Which of the statements given above are correct?
9Which of the following about the Taiga (Boreal Forest) biome is CORRECT?
10The 'Steppe' grasslands are found in:
11Consider the following statements: 1. Savanna is a tropical grassland associated with Africa. 2. Pampas are temperate grasslands of South Africa. 3. Steppes are temperate grasslands of Russia and Central Asia. 4. Veld is a temperate grassland of South Africa. Which of the statements given above are correct?
12Which of the following statements about global deforestation is/are CORRECT? 1. Brazil has the highest absolute annual area of tropical forest loss. 2. The Congo Basin rainforest is the world's second-largest tropical rainforest after the Amazon. 3. Palm oil plantations are a major driver of deforestation in Southeast Asia, particularly in Indonesia and Malaysia. 4. The REDD+ programme is a UN initiative to reduce emissions from deforestation.
13Consider the following statements: 1. African savannas are tropical grasslands with scattered trees, found between equatorial forests and deserts. 2. The Llanos are tropical grasslands in Venezuela and Colombia, drained by the Orinoco River. 3. Fynbos is a Mediterranean shrubland found in southern Brazil. Which of the statements given above are correct?
14Consider the following statements about plant adaptations in coastal wetlands and deserts: 1. Mangroves grow along tidal estuaries, salt marshes and muddy saline or brackish coasts. 2. Mangrove pneumatophores project downward into the mud and block air entry to submerged roots. 3. Cactuses can have shallow, wide-spreading root systems that quickly take up water. 4. Mesquite roots can reach water more than 61 metres underground. Which of the statements given above are correct?
15Which of the following pairs of tree species and their commercial use is INCORRECTLY matched?