Pollen grains can be stored for several years in liquid nitrogen having a temperature of

Pollen grains can be stored for years in liquid nitrogen, maintained at temperature

The pollen grains can be stored for years (long period) in

Pollen grains can be preserved as fossil because

Pollen grains can be preserved as fossil because

Why Pollen grain can be preserved as fossils?

Assertion: It is possible to store pollen grains of a large number of species for years in liquid nitrogen (-196^(@)C) Reason: Such stored pollen can be used as pollen banks, similar to seed banks, in crop breeding programmes.