Question:
Pollen grains can be stored for several years in liquid nitrogen having a temperature of
Pollen grains can be stored for several years in liquid nitrogen having a temperature of
Updated On: Aug 3, 2024
- $-160^{\circ} C$
- $-120^{\circ} C$
- $-196^{\circ} C$
- $-80^{\circ} C$
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The Correct Option is C
Solution and Explanation
Pollen grains can be stored for several years in liquid nitrogen at $ - 196^\circ C$ (Cryopreservation)
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Concepts Used:
Pollination and Double Fertilization
Pollination is defined as the pre-fertilization event or process, where pollen grains from another are transferred to the stigma of a flower.
Double fertilization is a complex process that involves the fusion of one female gametophyte with two male gametes.
Types of Pollination:
All plants having flowers completely rely on the pollination method for reproduction. There are 2 types of pollination –
- Self Pollination
- Cross-Pollination
The end products of double fertilization are:
- Diploid Zygote
- Primary Endosperm Nucleus