In pines, the female gametophyte contains each of which contains a(n)

Archegonia...egg

Explanation:

In pines, a megaspore repeatedly grows and divides. It gives rise to a female gametophyte. The female gametophytes is the site in which egg-bearing gametophytes develop.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs