In an young anther the four rows of cells which later produce pollen are called
Archesporium
Antheridium
Tapetum
Zoosporangium
It’s obvious.
How many pollen grains are formed from $10$ microspore mother cells by meiosis
$A$ : Growth of male gametophyte is completed over the female reproductive organ. $R$ : $2-$celled stage of partial male gametophyte is developed in-situ.
Exine of pollen grains is composed of
Identify $A$ to $E$ in the following diagram
