$A$ typical angiosperm anther is . . . . . . and . . . . . . .

Which part of the reproductive structure produces both enzymes and hormones?

$A$ typical angiosperm anther is

$A$ flower has $10$ stamens,each having a bilobed,dithecous anther. If each microsporangium has $5$ pollen mother cells,how many pollen grains would be produced by the flower?

$A$: In sporoderm,the pectocellulosic layer is surrounded by sporopollenin.
$R$: Exine is differentiated into outer ektexine and inner endexine.

If the developing microspore mother cells draw nourishment by contacting the tapetal cells,the type of tapetum is called