Heterospory and seed formation are usually discussed in the context of which structure?

Which of the following pairs of plants does not show seed formation?

Bryophytes and Pteridophytes resemble each other in all of the following features $EXCEPT$ one.

Select the correct match between Column $X$ and Column $Y$:

(Plant Name)	(Characteristic)
$(1)$ Oscillatoria	$(P)$ Thallus
$(2)$ Cycas	$(Q)$ Cell wall contains chitin mixed with cellulose
$(3)$ Fern	$(R)$ Primitive type of flowers
$(4)$ Yeast	$(S)$ Food stored as starch

Read the following five statements $(A$ to $E)$ and select the option with all correct statements.
$A.$ Mosses and lichens are the first organisms to colonise a bare rock.
$B.$ Selaginella is a homosporous pteridophyte.
$C.$ Coralloid roots in Cycas have $VAM$.
$D.$ Main plant body in bryophytes is gametophytic,whereas in pteridophytes it is sporophytic.
$E.$ In gymnosperms,male and female gametophytes are present within sporangia located on sporophyte.

Pteris differs from Funaria in having