AP BIOLOGY

Detailed explanation-1: -In ferns, the sporophylls are the normal foliage leaves, produce clusters of sporangia, known as sori.

Detailed explanation-2: -sorus, plural sori, in botany, brownish or yellowish cluster of spore-producing structures (sporangia) usually located on the lower surface of fern leaves. A sorus may be protected during development by a scale or flap of tissue called an indusium.

Detailed explanation-3: -These spores are formed in structures called sporangia. The leaves which bear these sporangia are called sporophylls. sori is a cluster of sporangia.

Detailed explanation-4: -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-5: -Sorus is a yellow-brown cluster of structures that produces spores in botany (sporangia). It is commonly seen on the bottom surface of fern leaves.