Sporangia produce spores that develop into tiny, heart-shaped gametophytes, and asexual reproduction is by sporangia or conidia. Given these facts, when does spore enclosure produce heart-shaped gametophytes among the following options:
- The area was once underwater
 - peachleaf willow
 - It helps them survive
 - Asexual reproduction
 - during the day
 - by indirect light
 - allow growth
 - in the autumn season


 

    Asexual reproduction     