State how ex-situ conservation helps in protecting biodiversity.

Ex-situ conservation is the protection of elements of biological diversity outside their natural environments. In this method, the genetic information of cultivated and wild plant species is preserved in the form of in vitro cultures and seeds, which are stored as gene banks for long-term use. This type of preservation is valuable in the case where the certain species going to eradicated shortly and if the species present in the very limited amount.