Unit 1: Unity and Diversity

Topic 1.9: Conservation of Biodiversity Questions

Practice 20 exam-style questions for IB Biology Topic 1.9. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.

1Identify1 mark
The figure shows the five human drivers pushing biodiversity down, with one drawn largest because it destroys the most. Which driver is drawn largest in the figure? [Diagram: bio-biodiversity-drivers]
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2Draw3 marks
Aimnova practice
Draw and label a simple diagram showing the five human-driven causes of biodiversity loss, indicating which cause has the greatest impact.
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3Identify1 mark
When beavers move into a stream they raise the number of invertebrate species living there. Why does this rise in biodiversity benefit the ecosystem?
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4Identify1 mark
Which of the following human activities is a cause of global biodiversity loss?
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5Outline2 marks
Aimnova practice
Other than ecosystem stability, outline two ways in which high biodiversity is valuable to humans.
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6Outline2 marks
Aimnova practice
A national park is set up to protect a single endangered primate species. Outline why protecting this species in situ also helps conserve many other species in the same area.
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7Identify1 mark
What best defines a keystone species?
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8Identify1 mark
What is the long-term goal of rewilding a degraded ecosystem?
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9Identify1 mark
Which statement best describes what biodiversity means?
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10Identify1 mark
Bees pollinating a farmer's crops is an example of which value of biodiversity?
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11Identify1 mark
In the EDGE of Existence conservation programme, what do the letters EDGE stand for?
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12Identify1 mark
Which description best matches the 'globally endangered' part of an EDGE score?
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13List3 marks
Aimnova practice
Wild bee populations are falling across a region of intensive farmland. List three different human activities that could be threatening these insect pollinators.
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14Outline2 marks
Aimnova practice
Outline what is meant by biodiversity.
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15Identify1 mark
Which of the following is an example of in situ conservation?
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16Define2 marks
Aimnova practice
Define the term 'evolutionarily distinct' as it is used in the EDGE of Existence programme.
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17Define2 marks
Aimnova practice
Define the term rewilding.
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18Identify1 mark
As the sea warms, a coral reef loses its colour and many corals die. Which cause of biodiversity loss is responsible?
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19Identify1 mark
Which statement best defines a wildlife corridor?
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20Identify1 mark
A large flightless bird that lived only on one island became extinct within a century of the first people settling there. The settlers hunted the bird for meat in large numbers. Which cause of biodiversity loss does this best illustrate?
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