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1.8 Biogeography & Biomes — Test 1
Q1. The number of species on islands typically increases with island size. Which statement best explains this?✓ Large islands have more habitat types and lower extinction rates
Q2. Match each animal to its phylogenetically closest relative: List I — (A) Sperm whale (B) Corals (C) Platypus (D) Sea hare (E) Prairie dog. List II — (i) Hippopotamus (ii) Sea anemone (iii) Echidna (iv) Cuttlefish (v) Guinea pig.✓ A-i, B-ii, C-iii, D-iv, E-v
Q3. Mangrove swamps are characteristically found along:✓ Tropical and subtropical coastlines
Q4. Heavy grazing pressure in a grassland is typically indicated by:✓ Increased growth of fibrous and unpalatable legumes
Q5. Inhabitants of an estuary must adapt to frequent environmental change chiefly because:✓ The salinity of the water is constantly changing
Q6. Which region is the most biologically diverse area on the planet?✓ Tropical rain forest
Q7. Identify the mismatched pair (biome – feature):✓ Prairie – Epiphytes
Q8. A ratio of Potential Evapotranspiration (PET) to Precipitation (PT) greater than 1 is characteristic of which biome?✓ Arid grassland / desert
Q9. In a tropical rainforest by day, which factor does NOT affect the spectral irradiance reaching the forest floor?✓ Spectral reflectance of the leaf litter
Q10. Which biome shows the highest root : shoot ratio in its plants?✓ Temperate grassland
Q11. The abiotic components are most nearly similar in:✓ Grassland and pond ecosystems sharing the same region
Q12. Which of the following is a classic example of discontinuous (disjunct) distribution?✓ Cuckoos
Q13. The theory of island biogeography predicts that the equilibrium number of species on an island is set by a balance between:✓ Immigration of new species and extinction of resident species
Q14. Which terrestrial biome is characterised by permafrost, low precipitation and a very short growing season?✓ Tundra
Q15. The Wallace Line marks a sharp biogeographic boundary between the faunas of:✓ The Oriental and Australian realms
Q16. The savanna biome is best described as:✓ Tropical grassland with scattered trees and a strong dry season
Q17. Convergence of unrelated desert plants on succulence and spines is an example of:✓ Biomes selecting similar adaptations under similar climates
Q18. Coral reefs reach their greatest development in:✓ Warm, clear, shallow tropical seas
Q19. The taiga (boreal forest) biome is dominated by:✓ Coniferous evergreen trees
Q20. A biogeographic realm is best defined as:✓ A large division of Earth's surface with a characteristic fauna and flora