<P> Sporangia can be terminal ( on the tips ) or lateral ( placed along the side ) of stems or associated with leaves . In ferns , sporangia are typically found on the abaxial surface ( underside ) of the leaf and are densely aggregated into clusters called sori . Sori may be covered by a structure called an indusium . Some ferns have their sporangia scattered along reduced leaf segments or along ( or just in from ) the margin of the leaf . </P>
<P> Sporangia can be terminal ( on the tips ) or lateral ( placed along the side ) of stems or associated with leaves . In ferns , sporangia are typically found on the abaxial surface ( underside ) of the leaf and are densely aggregated into clusters called sori . Sori may be covered by a structure called an indusium . Some ferns have their sporangia scattered along reduced leaf segments or along ( or just in from ) the margin of the leaf . </P>
where are the sporangia of a fern located
where are the sporangia of a fern located
typically found on the abaxial surface ( underside ) of the leaf
typically found on the abaxial surface ( underside ) of the leaf