Which one of the following is resistant to enzyme action?
Cork
Wood fibre
Pollen exine
Leaf cuticle
Tapetum is a part of
Assertion : Pollen mother cells $(PMCs)$ are the first male gametophytic cells.
Reason : Each $PMC$ gives rise to two pollens.
Members of which plant family, pollen grains maintain viability for months ?
How many microspore mother cells will give rise to $256$ microspores after reduction division