Pollens are preserved via Cryopreservation i.e., preserved in liquid nitrogen (−196o C).The pollen banks benefit farmers as-1) Availability of pollen of different genetic strains (for wider use) 2) Cryopreservation increases viability of pollens (which can be used in crop breeding programmes ) 3) Can be preserved / stored for longer duration 4) Prevent complete extinction of any species/ Maintain biodiversity