Cryoptreservation means stroing of products in

Options

A. liquid nitrogen
B. liquid oxygen
C. liquid hydrogen
D. liquid helium

Answer

**Step-by-Step Solution:**

1. **Definition of Cryopreservation**: Cryopreservation refers to the process of storing biological products at extremely low temperatures to preserve their viability and functionality over time.

2. **Application of Cryopreservation**: One of the primary applications of cryopreservation is in the storage of pollen grains. This technique is crucial for maintaining genetic diversity and facilitating plant breeding.

3. **Storage Conditions**: Pollen grains are typically stored in liquid nitrogen, which has a temperature of approximately -196 degrees Celsius. This extremely low temperature is essential for halting metabolic processes.

4. **Impact on Pollen Viability**: The viability of pollen grains refers to their ability to fertilize the ovule of a female flower. Cryopreservation enhances the viability of pollen grains by slowing down their metabolism, allowing them to survive longer than they would under normal conditions.

5. **Conclusion**: Therefore, cryopreservation means storing biological products, particularly pollen grains, in liquid nitrogen at -196 degrees Celsius to preserve their viability and functionality.

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