Question

Assertion (A): Pollen banks can be used in crop breeding programs.
Reason (R): Pollen grains can be stored for many years in liquid nitrogen.

• A. A and R are true and R is the correct explanation to A.
• B. A and R are true but R is not the correct explanation to A.
• C. A is true but R is false.
• D. A is false but R is true.

Hint:

Cryopreservation using liquid nitrogen is a key technique in modern plant breeding for pollen storage.

Answer 1

The Correct Option is A

Pollen banks are used to store pollen grains, which can later be used in hybridization and breeding programs. Pollen viability is maintained for years by storing in liquid nitrogen (cryopreservation), thus supporting the assertion with a valid reason.