Multiple choice The spores are released in the air by ______________. breaking of the wall of sporangium breaking up of whole of the parent body vigorous shaking of the sporangium breaking of the wall of hyphae Reveal answer Fill a bubble to check yourself A Correct answer Explanation Spores are released when the sporangium wall ruptures or breaks open. This passive dispersal mechanism allows spores to be carried by wind to new locations for germination.