In $Bryophytes$, which stage produces diploid, heterotrophic spores?

Bryophytes include .........

Archegoniophore is present in

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:

They are called amphibians of the plant kingdom.

The outer ring of peristomial teeth of $Funaria$ is