Question

how are pollen preserved in pollen banks explain how are such bank benefits our farmer write any 2 ways

Answer 1

Answer:

Cryopreservation

Pollen is stored in liquid nitrogen at -196°C.

Explanation:

1) It can be stored and can be used in the time of need.

2) Helpful in studies.

3) Can be preserved for a long time.

Answer 2

Pollen preservation

Explanation:

Pollen Banks' are where pollen grains of the desired species would be preserved as a genetic resource for the breeding program

Pollen can be preserved in pollen banks by two methods:

• Cryopreservation: Refers to the storage of cells, tissues and organs at the ultra-low temperature of liquid nitrogen (-196°C);ultra low temperature is being utilized to slow down the process of cell division and other cellular mechanisms
• Freeze or Vacuum Drying (lyophilization): Freeze-drying involves the rapid freezing of pollen to sub-zero temperature of -60° C or -80° C using inert gas helium or nitrogen, and then the gradual removable of water under vacuum sublimation

Pollen banks turns out to be beneficial for farmers:The agricultural biodiversity is preserved for long duration in the form of preserved pollen  and stored pollen can be used for the production of hybridised crops