The male gametes of bryophytes are . . . . . . .

In mosses,the second gametophytic stage is the leafy stage. Consider the following statements about the leafy stage:
$I.$ The leafy stage is produced from the secondary protonema as a lateral bud.
$II.$ They consist of upright,slender axes bearing spirally arranged leaves.
$III.$ They are attached to the soil through multicellular rhizoids.
$IV.$ This leafy stage bears the sex organs.
Which of the statements given above are correct?

Identify the plants $A$ and $B$ in the figures given below.

What is the dominant phase of a liverwort?

The protonema of $Funaria$ is:

What is the chromosomal status of the gametophytic stage in bryophytes?