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IBBiologyHLExam QuestionsUnity & DiversityConservation of Biodiversity

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First teaching 2023

First exams 2025

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Conservation of Biodiversity (HL IB Biology)

Exam Questions

49 mins9 questions

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Conservation of Biodiversity

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Conservation of Biodiversity

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1
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Which of the following is a correct explanation for biodiversity change?

  • Species extinctions occur due to anthropogenic extinction.

  • Scientists have changed the way species are classified.

  • Classification can be subjective.

  • There are more species alive today than have been alive in the past.

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2
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Which of the following describe(s) anthropogenic extinction?

I.
North Island giant moas were hunted to extinction between 1200-1300.
II.
An asteroid strike resulted in the extinction of most of the dinosaurs around 65 million years ago.
III.
Caribbean monk seals were hunted to extinction to provide oil and food.

  • I and II only

  • I and III only

  • I, II and III

  • III only

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3
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Which of the following is an important factor in mixed dipterocarp ecosystem loss in Southeast Asia?

  • Introduction of non-native species.

  • Establishment of nature reserves.

  • Clear-cutting of trees to provide agricultural land.

  • Changes in atmospheric oxygen levels.

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1
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Which statement(s) about biodiversity is/are correct?

I.
Biodiversity is a measure of the number of species present.
II.
Biodiversity can be assessed at the ecosystem level.
III.
Genetic diversity considers the number of genes that a species has.

  • I only

  • I and II only

  • II and III only

  • I, II and III

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2
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A study looked at the effect of regional cold weather on wren populations in the UK. It made use of data from the RSPB Breeding Bird Survey, a citizen science project that has been running since 1994, along with climate data from the Meteorological Office. Some of the results are shown in the graph below. Each data point on the graph represents data from a different region of the UK.

frost-days-wren-abundance-graph-1

Which of the statements about the results of the study is correct?

  • The results cannot be trusted because data collected by citizen scientists may not be valid.

  • There is a positive correlation between mean winter frost days and mean wren abundance.

  • Severe winter weather has a negative impact on wren populations.

  • An increase in mean frost days is causing a decline in wren populations over time.

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3
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Which of the statements about conservation is correct?

  • The EDGE programme is concerned with conserving all evolutionarily distinct species.

  • In-situ conservation is appropriate for all endangered species.

  • Ex-situ conservation provides opportunities for important research.

  • Only body tissue can be stored in tissue banks.

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