EVERYDAY SCIENCE

Detailed explanation-1: -In Eusporangiate ferns there is a large sporangium developed from several initial cells producing many spores. In some cases sporangium fuse to form Synangium. E.g., Psilotum, Selaginella. Eusporangiate ferns are vascular spore plants, whose sporangia arise from several epidermal cells.

Detailed explanation-2: -The eusporangiate sporangia develop from a group of sporangial initial cells. They divide into two components: the outer and the inner component. The outer cells give rise to the cell wall whereas the sporogenous tissues arise from the inner cell wall.

Detailed explanation-3: -: having sporangia which rise from a group of epidermal cells.

Detailed explanation-4: -Eusporangiate ferns include some typical-looking ferns such as Ptisana (Marattia) alongside some rather odd-looking plants such as Tmesipteris (fork ferns), Psilotum (whisk ferns), Equisetum (horsetails), Botrychium, and Ophioglossum (adder’s tongue ferns).

Detailed explanation-5: -The sporangium formed from a single epidermal cell, rather than from a group of cells is known as Leptosporangium. It is mainly found in ferns.