How many categories does the sub-class '$A$-da' (or '$A$-dae') contain?

Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.

Match the Column-$I$ with Column-$II$ and choose the correct option.

Column-$I$	Column-$II$
$A$. Chlorophyceae	$i$. Polytrichum
$B$. Rhodophyceae	$ii$. Marchantia
$C$. Liverworts	$iii$. Polysiphonia
$D$. Mosses	$iv$. Chara

What is common in all the three,$Funaria$,$Dryopteris$,and $Ginkgo$?

Assertion $(A)$: $Fucus$ shows a diplontic life cycle.
Reason $(R)$: In $Spirogyra$,the diploid zygote is the dominant and active stage.

Match the following columns:

Column-$I$	Column-$II$
$(a)$ Gymnosperms	$(p)$ Trimerous flowers
$(b)$ Monocots	$(q)$ Absence of flowers
$(c)$ Dicots	$(r)$ Primitive type of flowers
$(d)$ Pteridophytes	$(s)$ Tetramerous or pentamerous flowers