Final answer:
The stalked sporangium is called Leptosporangium, which grows at the end of a long, thin stalk and is typically found in plants like ferns. On the other hand, mushrooms are classified as basidiocarps, serving as the fruiting bodies for basidiospore production in basidiomycete fungi.
Step-by-step explanation:
The type of sporangium that is stalked is the B. Leptosporangium. This term specifically refers to a spore-producing sac found in certain types of plants like ferns, which grows at the end of a long, thin stalk. These structures are efficient at dispersing spores, largely due to the elevation provided by the stalk.
By contrast, a eusporangium is typically larger, with more spore production but is not necessarily stalked, and is found in different groups of plants.
For the second query, mushrooms are a type of D. basidiocarp. Basidiocarps are the fruiting bodies of basidiomycete fungi, and they bear the reproductive structures known as basidia, where basidiospores are produced.