Fact 1: Sporangia produce spores that develop into tiny, heart-shaped gametophytes.

Fact 2: Asexual reproduction is by sporangia or conidia.

Given the two facts above, answer the question "When does spore enclosure produce heart-shaped gametophytes?" with 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     