26. Ecologically fungi are important because

A. they act as decomposers and aid in nutrient cycling
B. they are a major cause of plant diseases
C. Both (a) and (b)
D. none of the above

27. The basidiomycetes include plant parasites that can cause

A. rust and smut diseases
B. candidiasis
C. ergot disease
D. Dutch elm disease & chestnut blight

28. A mutualistic association made up of a fungus and a cyanobacterium is called

A. a saprobe
B. a gamete
C. lichen
D. dimorphic

29. The thallus of a mold consists of

A. mycelium
B. spores
C. both (a) and (b)
D. none of these

30. __________ produce zygospores.

A. Slime molds
B. Dimorphic fungi
C. Club fungi
D. Black bread molds