general_pathology:infectious:infectious_diseases

Choose the correct answer

What feature might distinguishes Mucormycotina from Aspergillus sp?

Mucomycotina have right angle branching

Mucormycotina have pigented hyphae

Mucormycotina hyphae do not have septae

Aspergillus hyphae contain pigment

Fungus	Hyphae Width	Branching	Septae	Pigment	Parallel walls	Comments
Candida sp.	3-5μm	Can appear so	Yes	No	No - these are incompletely separated yeast	Can be challenging to differentiate from actual hyphae
Aspergillus, Fusarium, Trichoderma sp.	5-10 μm	Acute angle	Yes	No - hyaline (not pigmented)	Yes	Mucormycotina can sometimes have this morphology
Mucormycotina	6-50 μm	Right-angled	Pauciseptate	No - hyaline	Definitive separation from Aspergillus sp. requires further ID
Phaeohyphomycosis (e.g. Exophiala, Exserohilium), and other pigmented moulds		Yes	Yes	Melanin	May have yeast-like structures present as well