Question:
......... is used to store pollen in pollen bank
......... is used to store pollen in pollen bank
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Cryopreservation at -196°C in liquid nitrogen is widely used for long-term storage of biological materials.
Updated On: Jun 20, 2026
- Sodium alginate
- 10% sugar solution
- Liquid Hydrogen
- Liquid Nitrogen
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The Correct Option is D
Solution and Explanation
Step 1: Understanding pollen storage concept.
Pollen banks are facilities where pollen grains are preserved for long-term use in plant breeding and conservation programs.
Step 2: Requirement for preservation.
Pollen grains must be stored at extremely low temperatures to maintain viability and prevent metabolic activity.
Step 3: Role of liquid nitrogen.
Liquid nitrogen provides a temperature of about -196°C, which effectively halts all biological activity, making it ideal for long-term pollen storage.
Step 4: Analysis of other options.
Sodium alginate and sugar solutions are used in tissue culture techniques, not long-term pollen storage. Liquid hydrogen is not used in biological preservation.
Step 5: Final evaluation.
Only liquid nitrogen satisfies the requirement for cryopreservation of pollen grains.
Step 6: Final conclusion.
Thus, the correct answer is liquid nitrogen.
\[ \boxed{(4)} \]
Pollen banks are facilities where pollen grains are preserved for long-term use in plant breeding and conservation programs.
Step 2: Requirement for preservation.
Pollen grains must be stored at extremely low temperatures to maintain viability and prevent metabolic activity.
Step 3: Role of liquid nitrogen.
Liquid nitrogen provides a temperature of about -196°C, which effectively halts all biological activity, making it ideal for long-term pollen storage.
Step 4: Analysis of other options.
Sodium alginate and sugar solutions are used in tissue culture techniques, not long-term pollen storage. Liquid hydrogen is not used in biological preservation.
Step 5: Final evaluation.
Only liquid nitrogen satisfies the requirement for cryopreservation of pollen grains.
Step 6: Final conclusion.
Thus, the correct answer is liquid nitrogen.
\[ \boxed{(4)} \]
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