What type of fertilization is observed in Bryophytes?

What is the contribution of the botanist $Rothmaler$ in the classification of plants?

In $Riccia$ / Bryophytes:

The antherozoids of $Funaria$ are ....

In bryophytes,the simplest sporophyte is found in:

Choose the correct statements for the sporophyte of bryophytes:
$I$. The sporophyte is multicellular,not free-living,but attached to the gametophyte for nourishment.
$II$. Some cells of the sporophyte undergo meiosis to produce haploid spores.
$III$. These spores germinate to produce the gametophyte.