Identify $A$ and $B$ in diagram given below:
$A-Stamen; B-Pistil$
$A-Filament; B-Anther$
$A-Anther; B-Filament$
$A-Pistil, B-Stamen$
Anther is generally composed of
Which of the following has proved helpful in preserving pollen as fossils?
Meiotic cell division takes place during
Give products of pollen grain and their uses.
In monocots, male gametophyte is