Deuteromycetes are called imperfect fungi because they lack a known:
- Simple hypha
- Sexual stage
- Spore case
- Septate wall
Show answer and solution
Correct answer: B. Sexual stage
1. Only asexual and vegetative phases were known.
2. When a sexual form was found the fungus was moved.
3. So the class is defined by that missing stage.
_Source: syllabus Biology, Ch 2 'Biological Classification'_