Viable material of endangered species can be preserved by:
1. Gene bank
2. Gene library
3. Herbarium
4. Gene pool
One of the most important functions of botanical gardens is that:
| 1. | They allow ex-situ conservation of germplasm |
| 2. | They provide the natural habitat for wildlife |
| 3. | One can observe tropical plants there |
| 4. | They provide a beautiful area for recreation |