Unit 2: Ecosystems and Ecology

Topic 2.8: Biomes, Zonation, Succession Questions

Practice 20 exam-style questions for IB ESS Topic 2.8. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.

1define2 marks
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Define the term climate.
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2define2 marks
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Define the term zonation.
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3state2 marks
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State two examples of environmental gradients that can produce zonation.
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4define2 marks
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Define the term ecological succession.
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5state2 marks
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State two typical changes that occur as succession progresses.
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6define2 marks
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Define the term biome.
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7state2 marks
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State the two main abiotic factors that control the distribution of terrestrial biomes.
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8define2 marks
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Define the term ecosystem resilience.
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9outline4 marks
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Outline four abiotic characteristics of mangrove ecosystems.
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10explain4 marks
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Explain why rising air is usually associated with high rainfall.
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11state3 marks
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State where conditions are typically dry in global atmospheric circulation and suggest why.
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12define3 marks
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Define salinity and state how aquatic biomes are broadly classified using salinity.
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13outline4 marks
Outline two ecosystem services provided by a named biome.
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14explain4 marks
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Explain why abiotic factors can create distinct zones of organisms along a gradient.
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15outline3 marks
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Outline how competition can influence zonation patterns.
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16describe4 marks
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Describe how a transect can be used to study zonation on a rocky shore.
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17define3 marks
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Define the term kite diagram in the context of zonation fieldwork.
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18suggest3 marks
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Suggest why similar terrestrial biomes can be found on different continents.
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19distinguish4 marks
Distinguish between two named biomes and explain the main factors responsible for their global distribution.
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20outline2 marks
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The Great Barrier Reef is the world's largest coral reef system, located off the coast of Queensland, Australia.
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