Sporangia produce spores that develop into tiny, heart-shaped gametophytes.
Asexual reproduction is by spores produced in stalked sporangia .
Asexual reproduction by spores develop into tiny, heart-shaped gametophytes.
What  by spores develop into tiny, heart-shaped gametophytes?

  stealing seeds
  graptolites
  asexual reproduction
  impregnating men
  allow growth
  Most plants
  making babies
  peachleaf willow