Horsetail and fern are

The $13$-celled male gametophyte of $Selaginella$ shows:

Which one controls the dehiscence of the sporangium in $Dryopteris$?

Select the correct option for the following statements:
$(i)$ In $Dryopteris$ (fern), the prothallus is $haploid/diploid$.
$(ii)$ In $Pteridophytes$, there are $rhizoids/roots$.

Plants with small leaves (microphylls) are included in which of the following classes?

Seed habit is first observed in some: