IB Biology SL A4.2.7 Conservation Strategies Question Bank

Practise IB Biology SL A4.2.7 by comparing in situ and ex situ conservation, evaluating active management and checking biological-control risks to native species.

Exam points

Compare in situ and ex situ conservation using habitat, resources, genetic diversity and practical limits.
Evaluate active management and biological-control strategies without harming native species or food webs.

[Maximum number: 1]

The tundra ecosystem in Finnish Lapland has a short growing season and a mean temperature of $-2.0^{\circ} \mathrm{C}$ . It is also naturally grazed by herbivores such as reindeer (Rangifer tarandus). Different quadrats were set up to include and exclude the reindeer in both normal and warmed temperatures. Open-topped warming chambers were used to heat both the soil and air in the warmed quadrats. The graph shows the changes in plant richness over five years.

Figure for Question A4.2.7—Conservation approaches question 1 — IB Biology SL

Suggest how the results of this experiment can be used in the planning of in situ conservation programmes for tundra plant species.

All question bank results loaded

A4.2.7—Conservation approaches question 1