AP BIOLOGY

Detailed explanation-1: -In ferns, the multicellular sporophyte is what is commonly recognized as a fern plant. On the underside of the fronds are sporangia. Within the sporangia are spore producing cells called sporogenous cells.

Detailed explanation-2: -Sori (singular: sorus) are groups of sporangia (singular: sporangium), which contain spores. Sori are usually found on the underside of the blade.

Detailed explanation-3: -The underside of fern leaves often contain spot-like structures called sori. Each of the sori contains diploid cells called spore mother cells. Spore mother cells undergo meiosis to produce haploid spores, which are stored in a structure called a sporangium.

Detailed explanation-4: -Sori are clumps of sporangia that hold the reproductive spores. They are found on the underside of fern fronds.

Detailed explanation-5: -Ferns are reproduced from spores that are gathered in clusters called sori, which are usually on the underside of the fronds. The spores can be yellow, green, brown, or black. The sori are sometimes covered with a membrane called an indusium, which will lift up when the spores are ripe.