Microsporogenesis is a synonym for:

In order to check the purity of honey and its source,pollen grains are studied in a sample of honey. Such a study is called:

How many theca are present in each lobe of a typical bilobed angiosperm anther?

Identify the labelled part $X$ from the figure:

$A$ - Only some cells of the sporogenous tissue are capable of giving rise to microspore tetrad.
$R$ - The microspores are arranged in a cluster of four cells - the microspore tetrad.

Which of the following statements about sporopollenin is false?