In bryophytes,which of archegonium encloses egg

Archegonium is

Assertion: Bryophytes possess archegonium as a female sex organ. Reason: Algae also possess the archeagonium.

What is an Archegonium ?

In Riccia, the archegonium is

In Riccia, the archegonium is

In Riccia, the archegonium is

In which type of plants archegonium is found?

Archegonium is absent in