Scientists believe that green algae, Chlorophyta, are the ancestors of land plants. Volvox, a green algae, gives us a clue to this progression in plant form because, as seen here

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )

answer; the male's sperm cells have mitochondria, but because the sperm contributes dna but no cytoplasm, no mitochondria are passed to the egg at ferilization;