If asexual reproduction by spores develop into tiny, heart-shaped gametophytes, then what  by spores develop into tiny, heart-shaped gametophytes?

Answer choices:
- stealing seeds
 - graptolites
 - asexual reproduction
 - impregnating men
 - allow growth
 - Most plants
 - making babies
 - peachleaf willow

 

   asexual reproduction       