4.4 - Making use of biodiversity

Question 1

Explain how breeding programmes in zoos maintain the genetic diversity of captive
populations.

Answer 1

• animals are selected to prevent inbreeding depression
• studbook is used to select individuals for mating
• there is an exchange of animals between zoos

Question 2

Why are dry & cold conditions required for the storage of seeds? (3 points)

Answer 2

• reduces the metabolic reactions of the seeds
• which prevents germination occuring
• also prevents bacterial growth