AP BIOLOGY

Detailed explanation-1: -Meiosis occurs within sporangia, located on the underside of the sporophyte leaf.

Detailed explanation-2: -In ferns, meiosis occurs on the underside of fronds in small structures called sporangia.

Detailed explanation-3: -Sporangia can produce spores by mitosis, but in nearly all land plants and many fungi, sporangia are the site of meiosis and produce genetically distinct haploid spores.

Detailed explanation-4: -Solution : (c) In the ferns sporangium is diploid structure. It bears diploid spore mother cells which undergo meiosis and produce haploid spores.