Spores of $Riccia$ are liberated by

In which of the following groups would you place a plant which produces spores and embryos but lacks seeds and vascular tissue?

Consider the following statements:
$I.$ The liverworts grow usually in moist,shady habitats such as banks of streams,marshy ground,damp soil,bark of trees,and deep in the woods.
$II.$ The leafy members of liverwort have tiny leaf-like appendages in two rows on the stem-like structures.
Choose the correct option.

Select the incorrect statement for $Sphagnum$.

The last stage of the gametophytic generation is:

Which statement is incorrect regarding bryophytes?