IBBiologyHLExam QuestionsUnity & DiversityConservation of Biodiversity

Syllabus Edition

First teaching 2023

First exams 2025

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Conservation of Biodiversity (HL IB Biology)

Exam Questions

5 mins5 questions
Easy
Medium
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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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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