In which of the following plants is the main plant body a gametophyte?

Choose the correct option to fill in the blanks:
$(i)$ In oogamy,the female gamete is large,passive,non-motile,and laden with food (yolk).
$(ii)$ The gametophyte bears antheridia and archegonia.

Select the incorrect statement for $Sphagnum$.

In some liverworts,the ......... helps in the dispersal of spores.

Venter is the part of

Given below are two statements: One labelled as Assertion $A$ and the other labelled as Reason $R$:
Assertion $A$: The first stage of gametophyte in the life cycle of moss is protonema stage.
Reason $R$: Protonema develops directly from spores produced in capsule.
In the light of the above statements,choose the most appropriate answer from options given below: