Question

Ginkgo has been taken out of the list of endangered species, because it had been conserved by

• A. In-situ conservation
• B. Ex-situ conservation
• C. Imported in large number from Japan
• D. None of the above

Answer 1

The correct option is B Ex-situ conservation

Ex-situ conservation means literally, 'off-site conservation'. It is the process of protecting an endangered species of plant or animal outside its natural habitat; for example, by removing part of the population from a threatened habitat and placing it in a new location, which may be a wild area or within the care of humans. While ex-situ conservation comprises some of the oldest and best known conservation methods, it also involves newer, sometimes controversial laboratory methods.
Ginkgo biloba was once widespread throughout the world. However, only two populations are found to grow in the wild today.
The Ginkgo biloba tree has been propagated throughout the centuries, and is now cultivated worldwide.