Fungi without sexual cycle are grouped under:: (A) Phycomycetes, (B) Ascomycetes, (C) Basidiomycetes, (D) Fungi imperfecti
Answer is D. Deturomycetes or fungi imperfecti, they contain septate hyphae and are known for lack of sexual state.
Ref : textbook of microbiology, C P Baveja 5th edition pg no:544