How many categories does the sub-class '$A$-da' (or '$A$-dae') contain?

$A$ fungus contains cells with two nuclei from different genomes. The nuclei do not fuse but divide independently and simultaneously as new cells are formed. It belongs to

$A$ feature common to gametophytes and sporophytes of mosses and ferns is

What is the direct formation of a gametophyte from a sporophyte called?

What type of life cycle is exhibited by the alga shown in the figure?

Which of the following is not a group of cryptogams (non-flowering plants)?