The pollen grain is
An immature male gametophyte
A mature male gametophyte
Partially developed male gametophyte
Last stage of male gametophyte
Intine of pollen grains is composed of
After penetrating stigmatic and styler tissues, the pollen tube usually grow down towards the egg because
In a flowering plant the largest number of haploid cells occur in
Mature male gametophyte is derived from a 'pollen mother cell' by