What are the uses of Pteridophytes?

The prothallus of fern is

Which of the following is not a $Pteridophyte$?

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

Which of the following is included in the class $Sphenopsida$?

Assertion $(A)$: $Selaginella$ is heterosporous.
Reason $(R)$: The strobili of $Selaginella$ are unisexual.