Pollen grains can be stored for several years in liquid nitrogen having a temperature of
$-160^oC$
$-120^oC$
$-196^oC$
$-80^oC$
...... posses dense cytoplasm and generally have more than one nucleus
After demonstration of totipotency, a botanist wishes to produce identical plants from an angiosperm by tissue culture. The parts or tissues which are likely to yield haploid embryos are
In plants meiosis occurs in
In $40\;\%$ angiosperms, the pollen grains are shed at
How many microspore mother cells will give rise to $256$ microspores after reduction division