CAIE IGCSE Biology 20.4 Conservation Question Bank

Practise conservation questions by applying sustainable-resource ideas, matching endangered-species threats to protection methods and managing fish or forests.

Exam points

apply replacement rate to decide whether forests or fish stocks are used sustainably
match threats to monitoring, habitat protection, education, captive breeding and seed banks
explain quotas, closed seasons, AI, IVF and genetic-risk arguments in conservation programmes

Covered syllabus points

20.4.1—Sustainable resource as one which is 20.4.2—Some resources can be conserved 20.4.3—Organisms become endangered or extinct 20.4.4—Endangered species can be conserved 20.4.5—Forests can be conserved using 20.4.6—Fish stocks can be conserved using 20.4.7—Reasons for conservation programmes 20.4.8—Use of artificial insemination (AI)20.4.9—Risks to a species if its population

[Maximum number: 4]

(a)

The oceans contain fish stocks that can be managed as a sustainable resource to provide food for humans.

[ 4 ]

(i)

State what is meant by the term sustainable resource.

[ 2 ]

(ii)

Fishing can be managed to promote the conservation of fish stocks.

Explain one way that fishing can be managed to conserve fish stocks.

[ 2 ]

[Maximum number: 1]

What is an example of sustainable use of resources?

allowing only young fish to be caught

cutting down a forest and not replanting trees

controlling the number of fish caught with quotas

planting deforested areas with one species of crop plant

[Maximum number: 3]

Many species of spider are thought to be endangered.

State three reasons why animal species such as spiders become endangered.
1
2
3

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Covered syllabus points

20.4 Conservation question 1

Question (a)

Question (i)

Question (ii)

20.4 Conservation question 2

20.4 Conservation question 3