Question

Is archegonia present in conifers?

Answer 1

Answer =>>>>>>

The function of surrounding the gamete is assumed in large part by diploid cells of the megasporangium (nucellus) inside the ovule. Gymnosperms have their archegonium formed after pollination inside female conifer cones (megastrobili).

Answer 2

If, for some reason (global nuclear war and necessity to stay in a closed vault for several hundred years, for example), a group of people will be forced to live within an isolated community without the possibility to invite anybody from outside for a very long time, after a few generations everybody inside it is going to be blood-related to everybody else.

How should the community plan their reproduction to survive for a maximum amount of time without eventually becoming too closely related to each other and gaining various genetic defects as a result? And would letting in a few survivors from the outside once in 1-2 generations help a lot?l