2. Biodiversity

What is the definition of biodiversity?

• The variety of different species in an area

• The number of individuals of a particular species in an area

• The variety of different species and the number of individuals within each species

• The variety of different species and the number of individuals within each species in an area

Which of the following is not a reason for protecting biodiversity?

• Well-being

• Source of foods

• Source of medicines

• Global warming

Which of the following is not a method for conserving biodiversity?

• Captive breeding programmes

• National parks

• Seed banks

• Zoos

What is the area of a quadrat if each side is 0.5m?

Why are quadrats placed randomly?

• To ensure repeatability

• To improve accuracy

• To avoid bias

• To ensure validity of results

• 8

• 80

• 800

• 8000

What is the term for using one species to control the numbers of another?

• Biological control

• Chemical control

• Predation

What method would you use to monitor the change in distribution of species due to changes in environmental conditions?

• Random quadrats

• Line transect

• Capture-recapture

What do you call a species that has been brought in from another country?

• Foreign species

• Invasive species

• Alien species

• Tourist species

What must you assume when estimating population numbers using the capture-recapture method?

• There has been immigration

• There has been no immigration

• Some of the population have died

• There have been births within the population