Which of the following is not a $Pteridophyte$?

Pteridophytes are further classified into $4$ groups.

In some pteridophytes, sporophylls form distinct compact structures called $A$ in $B$ and $C$. Here $A, B$, and $C$ refer to:

The ferns in which the entire sporangium develops from a single superficial cell of the sporophyll are known as

What is the number of chromosomes in each cell of the root of Ophioglossum?

Assertion $(A)$: The sporophyte phase of ferns is long-lived and dominant.
Reason $(R)$: In ferns,the sporophyte phase exists as a thallus.