Why must mitosis be used to produce gametes instead of mitosis?

How does a gymnosperm prevent itself from pollinating the same tree

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f