Which one of the following is monoecious?

Read the following statements and answer the question based on them:
$(1)$ In liverworts,mosses,and ferns,the gametophyte is free-living.
$(2)$ Gymnosperms and some ferns are heterosporous.
$(3)$ Sexual reproduction in Fucus,Volvox,and Albugo is oogamous.
$(4)$ The sporophyte in liverworts is more elaborate than in mosses.
How many of the above statements are correct?

Which of the following does not have any orders but only $8$ series and many families?

Which of the following characteristics is common to both gymnosperms and angiosperms?

When the sperms of $Funaria$ and $Pteris$ are put together near the archegonia of $Pteris$,only the sperms of $Pteris$ readily enter the archegonia and reach the egg. The reason being that

Meiosis in $Ulothrix$ takes place during