The function of endothecium is
Nutritional
Mechanical support
Dehiscence
Protection
(c)Endothecium is hygroscopic and helps in the dehiscence of pollen sacs.
In $40\;\%$ angiosperms, the pollen grains are shed at
Pollen grains can be stored for several years in liquid nitrogen having a temperature of
Anther is generally composed of
If there are four cells in a anther, what will be the number of pollen grains?
In a flowering plant the largest number of haploid cells occur in
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