In which of the following groups are all three organisms characterized by having flagellated male gametes?

Identify the correct statements among the following:
$A.$ Heterospory is found in all members of Pteropsida.
$B.$ Selaginella is advanced among pteridophytes as it produces seeds.
$C.$ Pinus leaves are monomorphic,pinnate compound and have sunken stomata as an adaptation against transpiration.
$D.$ Sporic meiosis is characteristic of the life cycle in many organisms like Volvox,Chlamydomonas and Ulothrix.

Angiosperms and gymnosperms resemble in having

Which one is $wrongly$ matched?

Consider the following four statements. Which of them are wrong?
$(a)$ The sporophyte in liverworts is more elaborate than that in mosses.
$(b)$ $Salvinia$ is heterosporous.
$(c)$ The life cycle in all seed-bearing plants is diplontic.
$(d)$ In $Pinus$,male and female cones are borne on different trees.

Which plant group exhibits a haplo-diplontic life cycle pattern?