Biologically,the most resistant plant material is:

Which of the following is $NOT$ a part of the stamen?

Identify the incorrect statement regarding the sporogenous tissue.

$A$ 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?

How many pollen grains are formed from $10$ microspore mother cells by meiosis?

The pollen grain represents which stage?