IB ESS SL 3.003.2 Conservation Strategies Question Bank
Compare in-situ and ex-situ conservation strategies and their trade-offs.
- Syllabus
- First assessment 2026
- Course
- ESS SL
- Level
- SL
Compare in-situ and ex-situ conservation strategies and their trade-offs.

Construction of a dead hedge
Figure Conservation in Beijing
Figure Beijing Zoo maintains an active breeding programme that recently produced over 1000 surviving offspring of nearly 100 species in one year, including critically endangered species and giant panda.
The Beijing Gardening and Greening Bureau plans to plant at least one dead hedge in each city park; dead hedges use pruning/forestry waste and provide habitat for small mammals and reptiles.
With reference to Figures and (b), outline one advantage of Beijing Zoo's approach to conservation compared with that of Beijing Gardening and Greening Bureau.
zoo can provide specialised/safe conditions required for individual species;
b. it increases population of critically endangered species, which could be released into the wild/increasing genetic diversity / it produces populations for reintroduction of species / by breeding species prevents them from going extinct;
c. it raises awareness through education programmes;
d. it can gather revenue to fund conservation;
e. it supports (flagship) species that raise wider concern/support for conservation;
Marking guidance:
Do not accept only 'zoos prevent species from becoming extinct'.
Do not accept only 'helps to restore critically endangered species'.
With reference to Figures and (b), outline one advantage of Beijing Gardening and Greening Bureau's approach to conservation compared with that of Beijing Zoo.
a. it supports/conserves whole ecosystems/food webs;
b. it keeps species in their natural environment / it creates habitat for wildlife;
c. it is very cheap / simple to establish/manage / makes effective use of green waste;
d. it is more ethically acceptable as it does not require keeping animals in captivity;
Marking guidance:
Do not accept 'does not require much space'.