Prothallus is $:-$

Statement $X :$ $Selaginella$ is a heterosporous,gymnosperm plant.
Statement $Y :$ It produces two different types of spores.

$A$: In $Equisetum$,sexual reproduction occurs through sex organs like antheridia and archegonia.
$R$: In pteridophytes,the gametophytic stage is long-lived and responsible for sexual reproduction.

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

What is required for fertilization in the plant shown in the given figure?

The development of young embryos of pteridophytes within the female gametophytes is a precursor to the