Biodiversity

Question 1

Discuss the different types of sampling

Answer 1

Random - No system, but aim is still to be representative. No bias
Opportunistic - Those that are encountered first are chosen
Stratified - Population is divided into smaller groups based on characteristics, then sampled
Systematic - Follows a specific pattern

Question 2

How can we assess genetic diversity?

Answer 2

Proportion of polymorphic gene loci =
number of polymorphic gene loci / total number of loci

Question 3

Give 3 factors that affect biodiversity

Answer 3

• Population growth
• Deforestation for agriculture
• Climate change affecting habitats

Question 4

Give reasons to maintain biodiversity

Answer 4

Ecological - Protecting species
Economic - Reducing soil depletion
Aesthetic - Protecting landscapes

Question 5

Define conservation

Answer 5

The protection and management of species and habitats, to maintain biodiversity

Question 6

Give examples of in-situ conservation

Answer 6

• Marine conservation zones
• Wildlife resources

Question 7

Give examples of ex-situ conservation

Answer 7

• Seed banks
• Botanic gardens
• Zoos

Question 8

Give some agreements made with the aim of protecting species and habitats

Answer 8

• Convention on international trade in endangered species (CITES)
• Rio convention on biological diversity (CBD)
• Countryside stewardship scheme (CSS)