'Clamp connections' are observed in

'Clamp connections' are observed in Basidiomycetes (club fungi). During nuclear divisions of the dikaryotic cell, special structures called the clamp connections are formed. Theseclamp connections ensure that the sister nuclei of the dikaryon, at each division, separate into daughter cells.Torula stage of fungus is observed inZygomycetes. In Zygomycetes the zygospore germinates to produce a hypha, the promycelium with terminal sporangium.In Oomycetes one of the flagellum is of tinsel type and the other of whiplash type. The hyphal wall chiefly consists of $\beta$ glucans and cellulose and not chitin. The mycelium is extensive and coenocytic. In Ascomycetes the spore of sexual stage (meiospores) which are known as the ascospores are endogenous in origin. They are produced within sac-like structures called asci which very in shape.