Identify the correct statement
The period for which pollen grains remain viable is highly variable and to some extent depends on the prevailing temperature and humidity is a correct statement.
Whereas,
In wheat and rice the pollen grain looses viability within 30 minutes of their release.
Cryopreservation of pollen grains are done at -196ºC and not -96ºC
Nucleus of microspore divides by asymmetrical mitotic division and not by symmetrical mitosis.